Optoma HD33 1080P DLP Projector
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  • Performance
  • 4.5
  • Features
  • Ease of Use
  • Value
$2,799 MSRP Discontinued

Two years ago, Optoma brought the price of 1080p projection under $1000 for the first time ever with the HD20. As it turns out, the HD20 is still one of the finest 1080p projectors under $1000, despite two years' worth of competition. Now, Optoma has released the HD33, a DLP 3D 1080p projector that sells for less than $1500. This is the first 1080p 3D projector to break the $3000 mark, let alone the $1500 mark, and that in itself is worth getting excited about. Add to that the HD33's solid 2D performance, great color, radio-frequency glasses, and virtual absence of crosstalk and you've got a projector that is a solid value at twice the price. At $1500, the HD33 is a steal.

Editor's Note 8/26/11: The original version of this article stated that the projector came with one pair of glasses. The glasses are actually purchased separately. We apologize for the error.

The Viewing Experience

While technical details can reveal a lot, the most important consideration for any home theater projector is how it looks--and the HD33, in a word, looks good. The default mode, Cinema, is also the best mode for movies and video, and we measured this mode at 847 lumens with the lamp at full power. This is a lot of light, so the first thing we did was switch to low power, called Standard on this projector. This brought light output to a more manageable 661 lumens, which is still plenty of light. We settled on a screen size of 120" diagonal--you can go bigger with a higher-gain screen or excellent light control--and fired up the Blu-ray player.

The Optoma HD33

Contrast on the HD33 is only 4000:1 full on/off, and it shows at times. The projector has no iris, auto or otherwise, and black level can suffer because of it. There is the ImageAI function, which varies lamp power in response to the content on screen, but this also causes fan noise to fluctuate and in our experience is not as fast as a good auto iris. Black level on the HD33 is very similar to black level on the older HD20, which we put up head-to-head with this new model. On the other hand, dynamic range shows a clear improvement, and the HD33 looks much more three-dimensional than the older model. The HD33's picture at times looks poised to pop off the screen. The image is vibrant, color is saturated without being overdone, and fine detail is razor sharp. It is a beautiful picture.

Next up is 3D. The HD33 is a full 1080p 3D projector with full HDMI 1.4 compatibility. It uses radio-frequency (RF) glasses, meaning line-of-sight is no longer required, as is the case with infrared (IR) emitters. Our preferred test disc these days is The Ultimate Wave: Tahiti, an IMAX film shot in 3D using live actors instead of CGI. The picture was plenty bright for our setup, perhaps even a touch too bright. A touch of ambient light in the room should not do the image much harm. The HD33 strikes a good balance between light transmission and crosstalk, which we saw very little of. The glasses never lost sync thanks to the RF transmitter--turn your head away or look down at the remote and the glasses keep on going. In the past, we have seen IR glasses lose sync at the slightest provocation. Color in 3D is about as accurate as we've seen, though the glasses do add a slight tint of green to the image. Since the HD33 has a separate 3D preset, this can be calibrated out if desired. All in all, it was one of the more enjoyable 3D experiences we've had in the home, regardless of price.

Key Features

The HD33 is a simple projector in the best possible way. The HD33 has a tight, laser focus on what really matters--picture quality. It has this in spades.

Picture Quality in 2D. Like the HD20, the HD33 offers great picture quality for 2D theater in both standard and high definition. Dynamic range is solid, with sparkling highlights and black level comparable to the competition in this price range. Color is vibrant and saturated, and grayscale tracking is already close to the ideal 6500K straight out of the box. Some fine-tuning can coax additional performance out of the projector should you desire, and the end result is near perfect 6500K across the board. Detail clarity is superb, though the projector shows some signs of digital noise and DLP dithering that can detract from the otherwise natural feel of the image. This noise is especially evident in large swathes of solid color, such as a sky. That said, noise was no worse than other projectors in this price range; all of them show digital noise to some degree.

Picture Quality in 3D. Everything that is true of the HD33 in 2D is equally true in 3D. If anything, the 3D glasses help the projector's black level appear even deeper, which makes the picture look higher in contrast. Highlights, sometimes too bright in 2D, are brought down to a more manageable level due to the glasses. While the glasses reduce the brightness of black and white equally, your mind is fooled into seeing an image that looks higher in contrast due to the better black. The other noteworthy quality is the HD33's near absence of crosstalk. Even in the most difficult scenes, the HD33 did a remarkable job of keeping left-eye and right-eye images separate and distinct. This, more than anything, contributes to the high-quality, professional feel of 3D.

The Optoma HD33 Connection Panel

PureMotion. The HD33 also includes PureMotion, a frame interpolation system used to reduce judder. It has three settings, each more aggressive than the last. There is some digital video effect, more so on the higher settings. This is desirable for live performances and television and less desirable for film. What's more, PureMotion can be activated in 3D, making the 3D picture appear less jerky. This is especially helpful when watching fast action sequences, such as those in Avatar.

RF Glasses. To our knowledge, the HD33 is the first 3D projector to use an RF emitter to sync the glasses to the projector. Radio has several advantages over IR, not the least of which is that it does not require line of sight between emitter and glasses. This means your glasses will never lose sync because you looked too far to one side, or turned your head to talk to a friend, or looked down to find the remote. It is also much simpler to calculate range when using RF glasses, as one does not need to worry about bouncing the image off of the screen or mounting the emitter in an easily visible place. Simply place the emitter next to the projector and it should work just fine, provided the audience is within about 10 meters.

The downside is that the glasses won't turn themselves off unless the projector is no longer displaying 3D, so it can be easy to run down the batteries accidentally. The HD33 comes with the emitter. The glasses are purchased separately and additional pairs cost less than $100. The glasses fit well and have large lenses, so those who already wear glasses should be able to use them without issue.


Light output. While the HD33 is rated at 1800 lumens, none of its preset modes are that bright. Cinema, our preferred setting for film and video, measures 847 lumens in Bright lamp mode and 661 in standard, a reduction of 22%. Standard is the default lamp setting for most image modes, though we took all of the following measurements using Bright. Reference, another neutral setting with accurate color, measures 929 lumens. Reference has a different gamma curve than Cinema does, so shadows look much different than they do in that mode. Photo, with its slightly warmer grayscale, measures 1024 lumens. Bright, true to its name, measures 1049 lumens and is the brightest mode available on the HD33. As stated previously, 3D mode gets its own setting, though this is not mandatory--the projector allows you to switch back to another preset if you would prefer.

Color. It's unusual for inexpensive projectors to have accurate color out of the box, but the HD33 is already an unusual projector. Grayscale tracking in Cinema mode averages around 6650K by default, with a slightly warmer high end and cooler shadows. To bring the projector closer to 6500K, we made the following adjustments:

Red Gain0
Green Gain-2
Blue Gain0
Red Bias2
Green Bias0
Blue Bias2

For those who are new to this, "gain" is the adjustment for the bright end of the grayscale, while "bias" is the control for the low end. Just remember that Bias and Black both start with B, and you'll be fine.

By the time we were done, color temperature was within 100 degrees of 6500K across the board. This is outstanding performance for such an inexpensive projector.

Connectivity. The HD33 features a pair of HDMI 1.4 inputs, a set of YPbPr component inputs, a VGA port, composite video, USB, RS232C, a VESA sync port for the RF emitter, and a 12V trigger. S-Video is missing, though I doubt it will be missed. The other thing that is missing is a hardwired control panel; the HD33 relies entirely on its remote control. The only button on the case is to turn the power on and off.

Color wheel. With a 3x-speed, 6-segment RGBRGB color wheel, the HD33 waves a fond farewell to the rainbow effect. Here's where it gets tricky: the HD33 has a refresh rate of 120Hz and the color wheel goes through three full cycles per frame, for a 3x refresh rate. If this projector were running at 60Hz, the same wheel speed would be referred to as 6x. If you see both numbers around the Internet, this is why. This wheel configuration should eliminate color separation artifacts for all but the most hypersensitive viewers. In fact, this paragraph was almost omitted from the review because, after not seeing any rainbows over several days of testing, I forgot that they were even a concern.

Lamp life. The HD33's lamp is rated to last up to 3,000 hours in Bright mode and 4,000 hours in Standard. This is fairly typical of home theater projectors. However, replacements cost only $249, making it less painful when the lamp does finally burn out.


The HD33 is a stellar product for the money, but it's not perfect. The notable limitations of the projector are as follows:

Placement flexibility. The HD33 only has a 1.2:1 lens and no lens shift. The lens has a fixed upward throw offset of 7%, so the bottom edge of the image will appear 7% of the image's height above the lens centerline. This mild angle is ideal for table mounting, while those with high ceilings might require a drop tube before the projector can be ceiling mounted properly (i.e. without using keystone adjustments). While there is nothing inherently wrong about a fixed lens or a short zoom range, many inexpensive projectors now offer longer zooms, and some even feature lens shift. This makes placement more difficult than it would otherwise be.

No gamut adjustments. Grayscale adjustment on the HD33 is a snap. Gamut, on the other hand, cannot be adjusted. To its credit, the HD33's default gamut is not completely off in left field, but there is some room for improvement. What color gamut tells us is how well the projector can interpret color data; when a signal calls for 100% red, the color it feeds back is defined in what is called a lookup table, or LUT. These LUTs can be adjusted to provide more accurate color, giving you the exact experience that the director had in mind. An inaccurate gamut does not mean that the projector necessarily looks bad, merely that it does not adhere to the standard.

Remote Control. The HD33 has no hardwired control panel, so all adjustments must be made through the remote. The remote is small and feels good in the hand, but everything goes to pot when you try to use it in a dark room. The backlight, a strong blue, is so bright that it wipes out the viewer's dark vision almost instantaneously. What's more, the buttons themselves are labeled with pictograms with printed words underneath. Unfortunately, it is almost impossible to read the printed words and the symbols don't make a lot of sense. Once you learn the layout, the remote becomes less of a concern, but it is annoying at first.

Light output. Cinema mode on the HD33 does not suffer for lack of light; in fact, it's one of the brightest Cinema modes we've seen in quite some time. However, when a projector claims to produce 1800 lumens and we then measure all of the preset modes at less than 1200, it is disappointing--especially when other projectors in this price range make the same claim but actually deliver.


The Optoma HD33 is a projector of firsts. It is Optoma's first 1080p 3D projector. Previously, the company has made a number of 720p DLP Link 3D projectors meant to be used with PCs, but this is their first foray into HDMI 1.4 compatible 3D. It is also the first 1080p 3D projector under $3000. Other 1080p 3D projectors start at $3499 and go up from there. Finally, it is the first 3D projector to our knowledge to use RF glasses technology, eliminating concerns about line of sight and screen bounce.

The HD33 shares a lot in common with the older HD20. Both significantly altered the market upon release. Before the HD20, no one had ever seen 1080p under $1000. Before the HD33, no one had ever seen 3D 1080p under $3000. Beyond that, though, the two projectors share the same smooth, natural picture that videophiles enjoy so much. Perhaps most importantly, both projectors offer performance disproportionate with the price. When you are looking for a high-quality 3D projector and want the absolute best value for your money, the HD33 is exactly what you've been looking for.

While we have assigned star ratings to the HD33, these are preliminary and based on our opinion of the projector at this time. As competing models come out, we may revise these ratings to better reflect the projector's position in the current market. However, we suspect the HD33 will remain a strong contender in this year's home theater projector lineup. Its combination of performance and low price is simply too attractive to be ignored.

For more detailed specifications and connections, check out our Optoma HD33 projector page.

Comments (75) Post a Comment
user Posted Aug 25, 2011 7:48 PM PST
Great review ! could you clarify that you get one pair of RF glasses with purchase of this projector ?
Didier Posted Aug 26, 2011 6:49 AM PST
is it possible to use old Optoma glass (z101 and z102) with the HD33, i bought 6 and a 3dxl
Bill Livolsi Posted Aug 26, 2011 9:09 AM PST
My apologies; while the projector I reviewed had a pair of glasses in the box, Optoma has informed us that glasses must be purchased separately.
Bill Livolsi Posted Aug 26, 2011 9:11 AM PST
Didier - yes, it is possible to use DLP Link glasses with the HD33. You can configure whether to use VESA 3D or DLP-Link 3D in the menu system. You won't need the 3DXL, though.
Ken Posted Aug 26, 2011 9:26 AM PST
Any differences in the Optoma HD3300?
bobzdar Posted Aug 26, 2011 10:43 AM PST
Can the HD33 accept a 1920x1080 120hz input from a computer? Some specs I've seen show it can only accept a 60hz input at 1080p. 120hz would allow 3d from an htpc at 60hz/eye.
Bugnguts Posted Aug 26, 2011 8:59 PM PST
Great job Optoma. I hope this will bring down the price of 3d projection, but I really would like to try gaming in 3d. Unfortunately HDMI 1.4 cannot handle the 1080 at 60Hz plus. So until display port or something with higher bandwidth is supported I can't justify the leap.
polkfarmboy Posted Aug 27, 2011 2:49 PM PST
Are all the light output modes the same brightness in 3d and 2d ? If so why does this unit not dim in 3d like all the others

If the light output is the same in 3d then I think I just found my new 3d gaming projector
Luis Posted Aug 28, 2011 7:51 PM PST
Does the HD33 do 2d to 3d conversion? Your review doesn't seem to mention this so I figure that it doesn't.
Bill Livolsi Posted Aug 29, 2011 8:58 AM PST
Ken - the HD3300 is ISF Certified, so you can adjust gamut and have additional calibration options. It is also sold through authorized vendors instead of the HD33's open distribution model.

polkfarmboy - Projectors as a general rule do not dim in 3D mode. What happens is that the glasses make the projector appear much less bright than in 2D, though the projector is producing just as much light if not more. The dimming is a function of the glasses, not the lamp.

Luis - no 2D-3D conversion. If that's something you're after, they now make Blu-ray players that will do it for you.
Rick Posted Aug 29, 2011 1:03 PM PST
I just received my HD33 on Saturday and picture looks amazing, but I am having a strange issue with it. I watched several movies and afterwards was unable to get it to respond the the remote or to the power button on the back. Video was still being played via HDMI but the projector was basically locked up. Thus has happen twice.

Did you see anything similar when conducting your tests?
willdao Posted Aug 29, 2011 6:33 PM PST

I thought the HDMI 1.4 "a" revision addressed the 1080p/60 gaming issue?
WellyWell Posted Aug 30, 2011 8:04 PM PST
can't wait to get mine. I am really looking forward to this purchase. I was looking at the Panny and possibly the new Mits thats coming out but I think at this price point and the PQ review this just can't be passed up! Ordering this tomorrow. Hope it ships quick. Enjoy
jamie Posted Aug 31, 2011 12:55 PM PST
Thanks or your review. Good work. I do have a quick question tough:I thought that when I first saw this projector on the Optoma website that the 3d mode was 720p...can you clear up if both the 2d and 3d modes are in 1080p? Also, did you do a lumens measurement in 3d mode? Thanks
Lcoangeli Posted Sep 1, 2011 7:23 AM PST
I was asking the same thing myself, Which are differences between HD33 and HD3300 other than the price?

I was almost to pre-order the GT750E because it has more lumens and short throw, Is it worth paying the $700 difference to get the HD33 ($1499) instead of the GT750 ($799)? I have the budget, but want to be sure of the correct item for my needs (that is: Console and PC 3D gaming, Home theater from Blueray and HD satellite service).

I really like the new feature for RF glasses on HD33 and 3300, I understand the GT only supports DLP Link glasses. Honestly for $1499, I would expect a three year warranty at least!!

PCentral you are the best; Love reading your reviews, it really help us to get the best for our money. Regards Luis
Luis Posted Sep 1, 2011 12:12 PM PST
I really love the reviews here, it helps a lot to protect our money and choose more wisely when buying these expensive equipments.

I have the same question as Ken, What significant differences are between the HD33 and HD3300 other than the price.

I was almost to submit a pre-order for a GT750E because it has more lumens and short throw but placed it on hold. Is it worthy of paying $700 aditional for the HD33 ($1499) instead of $799 for the GT750?

My primary use for it will be 3D gaming (from console and PC's), also as home teather with Blueray's and HD satellite programming.

Bill please give me some feedback on this!!! I am a rookie :-) I already have a screen with 1.3 in Gain (120" 4:3 format), my setup will be wide screen although I may have to shrink it to fit 108" of 16:9 format more or less. I have some trouble to control ambient light during the day and the projector will be installed on the ceiling with a mount extended 10" down.

I like better the new feature in the HD33 and 3300 for RF glasses than the DLP Link setup used by the GT750.

Is the warranty for the more expensive models (HD33 and HD3300) three years? For that price range ($1499-1999) I think is a must!!

BANet Posted Sep 1, 2011 1:37 PM PST
Just purchased the HD33 based on the reviews. I'm going to be running it on a 110" diagonal screen. I'm not even ready for 3D applications yet, but for this low price, I might as well get it now. Visual Apex is also selling the RF glasses for $79 (vice $99 advertised). Just FYI.
Eric Posted Sep 6, 2011 9:10 AM PST
Thank you for the the excellent reviews. No magazine, including Consumer Reports, provides the amount of unbiased info that you do! Does this, or any (lower priced)3d front projector use passive glasses? Library/Park District use would require very inexpensive glasses, cardboard framed polarized would be ideal.
Regis Posted Sep 6, 2011 1:33 PM PST
Hi There: my heart was pretty much set on getting a Epson Home Cinema 8350 until I stumbled upon this review. I certainly don't mind paying the extra $$ for the Optoma in order to get 3D capability, but will I be giving up too much on quality on the 2D side of things? Anyone may have some insight? Thanks in advance!
tuanbui Posted Sep 8, 2011 7:52 AM PST
hi i have 3d projector columbia cinema and 3d bluray dvd i hook up but not work can you please help me how can i connect make it work for 3d
Pedram Posted Sep 13, 2011 3:17 PM PST
You list the HD33 projector at $2999, but other reports say it has a MSRP of $1499.
BANet Posted Sep 14, 2011 2:22 PM PST
Received my HD33 today. Did a quick test session and I have to say this thing is phenomenal out of the box! I can't wait to get it fully hooked up and calibrated for my room so I can watch Star Wars this weekend. Perfect timing.
Matt Posted Sep 15, 2011 8:47 PM PST
Anyone know of a good dealer that would easily handle returns if I don't like it? I'm really tempted to pull the trigger on this, but I'd like to see it in my own home with my own eyes before I'm married to it.
Echeva Posted Sep 19, 2011 12:28 AM PST
I'm very sensitive to crosstalk. Currently I own an Optoma h67 which also has virtually no crosstalk, though it has uncomfortable rainbow effect. How does hd33 compare with respect to crosstalk?, the review says virtually none, is it as non-existent, as the one in hd67?
Bugnguts Posted Sep 21, 2011 11:26 AM PST
@ willdao Unfortunately it is only 1080i at 60Hz otherwise the fastest 1080p is 24hz. http://en.wikipedia.org/wiki/HDMI and a Tomshardware article done on AMD's open 3D gaming features. Some graphic cards have display port options but no consumer 3D projectors have them. Nvidia reaches 120hz by using two DVI, but I am lucky if a projector has 1 DVI cable. What I would love to do is create a circular screen and by tweaking the ini files make the image come out walleyed on a standard screen but fit the wrap around screen. My own 3D imax Oblivion or Skyrim to get lost in..mmmmmm
EC Toy Posted Sep 23, 2011 8:05 PM PST
I am new to projector, just ordered the HD33 and 2 glasses, going to project to a 120 diagonal screen. With good HDMI cable that claims support 3D and also 3D blu-ray player, is that all I need to watch the 3d movies? Do I need to purchase anything extra, or do any updates?
Ch123 Posted Sep 24, 2011 3:27 PM PST
What is the noise level of this projector?
Bill Livolsi Posted Sep 26, 2011 4:25 PM PST
Wow, a lot of comments! Thank you everyone for reading the article. I hope you enjoyed it.

I'll try to reply to all of you; my apologies if I miss someone.

Rick - no, we never had anything like that happen. Have you contacted Optoma support?

jamie - The projector is 100% 1080p. Lumens in 3D mode did not significantly differ from lumens in the other modes, and since you're never actually watching 3D mode without the glasses, we thought it was a silly measurement to include. I can go look through my notes if you'd like but it's around 900.

Lcoangeli - the HD3300 is an HD33 with ISF options, sold through authorized resellers and custom installers. As for your other question, you're sort of out of luck--the HD33 will do HDMI 1.4 3D but not PC 3D, while the GT750 will do PC 3D but not HDMI 1.4 3D. To do both, you'd need a projector like the GT750 plus an adapter box like Optoma's 3D-XL.

Luis - I answered Ken's question below, and then again to Lcoangeli. Actually, most of my answer to Lcoangeli applies to you; right now you can't do PC 3D and HDMI 1.4 3D on the same projector without some sort of adapter box.

Eric - passive 3D on projectors costs a lot more than you'd think, which is why you don't see it much. To my knowledge the only one around is the big LG dual-engine 3D machine from last year, and it was very large, very cumbersome, and image quality was not up to snuff for home theater. You can build your own passive system using polarizers and two projectors, but not many people do this now that prices on active-shutter 3D projectors are so low.

Regis - you'll be sacrificing some black level. You also lose the Epson 8350's excellent zoom and lens shift. As far as actual image quality, though, you don't lose much.

Pedram - MSRP is $2999; MAP is $1499. These two numbers often differ. Just to be sure, though, I have contacted Optoma to ask for a clarification. If we have made an error, it will be corrected.

Echeva - the HD33 is miles ahead of the HD67 on crosstalk.

EC Toy - That's all you need. Enjoy.
Rick Posted Sep 28, 2011 2:33 PM PST
Follow up: Optoma replaced my HD33, and the new one does not exhibit this issue. It has worked perfectly for several weeks.
Dan Posted Sep 29, 2011 11:24 AM PST
Bill or projector experts,

I know the Panasonic PT-AX200U is an older projector and only 720P, but I was wondering if the picture on an HD33 would be an upgrade from the pt-ax200u in 2D? Thanks.

Dan Posted Sep 29, 2011 11:30 AM PST
Bill or expert projector people,

I currently have a panasonic pt-ax200u 720p projector, while it is not a full 1080p projector it does a good job for me in 2D. My question is this, would the HD33 be an upgrade in picture quality in comparison to the pt-ax200u in 2D?

Thanks Dan
A.B.M. Kamrul Ahsan Posted Sep 30, 2011 11:23 AM PST
I already ordered for HD33. Shutter type giasses are ok for it. I want to use in my hall room. It possiable for huge number viewers at a time.
Bill Livolsi Posted Oct 3, 2011 10:57 AM PST

Short answer? Yes.
daniel Posted Oct 5, 2011 4:47 AM PST
new to projectors ;-)

what's PC 3D versus HDMI 3d?

with ambient/daylight in the room, will the picture quality still be decently watchable?

does it take long for it to warm up/turn on?
jamie Posted Oct 7, 2011 9:02 AM PST
Thanks for the answer Bill. I didn't think my question about potential 3d lumen light reduction in 3d mode was silly but maybe it was. Some of this stuff is very new to me. It was based on my reading of a number of reviews, including the review by Jeff Janis of the Acer 5360h, noting a significant lumen reduction when switching to 3d mode. According to the review, that projector measures at 2169 in normal mode and gets reduced to 698 in 3d. I guess I was just wondering if i could expect the same from the HD33. So given your answer, is there no drop off in brightness on the HD33 when you make the switch to 3d...thanks
Rich Posted Oct 8, 2011 6:22 AM PST
Bill, one quick clarification - you mentioned in one of your responses that PC 3d and hdmi 1.4 3d are not possible without an adapter box - that is not correct, actually. Both ATI and Nvidia fully support directly outputting hdmi from a PC for movies or for games.

Nvidia I believe requires a 240 or higher (though keep in mind 3d gaming requires about twice the capability from the card), and ATI requires one of their 6xxx series cards. And of course the card must have an HDMI port.

So long as those requirements are met, you can do the following:

Assuming you have a bluray drive, bluray 3d plays from Cyberlink PowerDVD or Arcsoft TotalMediaTheatre to hdmi 1.4 via ATI card with no additional software (Nvidia requires the 3dtv play software).

90%+ games can operate in 3d using tridef or iz3d on an ATI card or using 3dtv play on an nvidia card.

The down side is that you have to make a tradeoff in reference to resolution vs framerate; since 3d over hdmi 1.4 does not support 1080p@60hz, you have to either run at 24hz or drop to 720p for 60hz.
milani Posted Oct 8, 2011 6:47 AM PST
great review

can i use any 3d glasses with Optoma HD33 ? if not can you tell me the type can work and what the special thing in RF glasses
chachanyc Posted Oct 9, 2011 4:57 PM PST
im thinking about buying the hd33 but currently i have a 1.8 gain screen and was worried that it was too high of contrast considering reviews that state i need a negative contrast screen for this projector Can u clarify this for me?
reuben Posted Oct 10, 2011 12:02 PM PST

Long answer: Yes, my sister has an AX200u, and while the projector is good, it does not hold a candle to 1080p for screens larger than 100".
milani Posted Oct 16, 2011 3:59 PM PST
hi when i visited amazon Germany website i found there is different between the American model and the Germany model such as the Dynamic Contrast 10000 in the Germany but 4000 for the American and Fluid 24p motion made ultra-smooth with PureMotion4 in the Germany is there any other differences i think the Germany is better
jimmu Posted Oct 22, 2011 6:26 PM PST

i am just about to buy this projector and 4 rf glasses, but before i do, i had a couple of questions.

i want to play sbs movies from my computer, is this possible. pc has hdmi out.

can i play pc 3d games on this using iz3d?

i wil be watching from a 2.7m viewing distance. what is the max size diagonal i can get at 16:9??

i have an amd hd 6670.

thanks in advance :)
dbugg Posted Oct 22, 2011 10:14 PM PST
Thought I understood but now I'm confused... PS3 gaming in 3d or no?
Maakusi Posted Oct 24, 2011 11:36 PM PST
Bought the projector today and love it already. Great picture at 12' projection distance to 100' screen.

The only problem now is that I can't buy any glasses yet (retailer for the projector was BestBuy Canada, but they don't have glasses). Has anyone found an online source for them yet?
jain Posted Oct 25, 2011 8:17 AM PST
just need a comparison on the epson 1080P 3d/ jvc -rs40 / optima hd 33 which one is the best choice for a home cinema experience 3D
Eric Kline Posted Oct 27, 2011 8:23 AM PST
These active 3D projectors work alternating the image between what your left eye sees and what your right eye sees. The glasses black out each eye in sync with the projector changing images. Your eye and brain average out the on/off brightness, so at best the image only looks 50% as bright as it would without 3D glasses. In reality, the synchronization can't be perfect, the on/off switch takes a small amount of time so each eye is off a little more than 50% of the time. So you will probably only get 30-40% of the brightness when watching 3D. If you measure the screen you won't see the difference, unless you measure it through the glasses. Even passive systems still lose over half the brightness, because the polarized lens cut out over 50% of the light.
sonic debauchery Posted Oct 28, 2011 4:21 AM PST
What was the gain of your screen when you did this test?
Daniel Posted Nov 10, 2011 1:08 PM PST
I have an older Infocus IN76 which just bit the dust. Repair cost doesn't warrant getting fixed. Thought about the HD33 because of price and good reviews although I'm not too concerned about 3D.

Would this be a considerable uograde over my older IN76 in terms of 2D? I am projecting at 11' with 90" screen.

Does it have vertical stretch mode for CH setup?

Psythik Posted Nov 12, 2011 12:33 AM PST
How does the input lag compare to the Epson 3010? I'm a gamer so this is important.

Also, what about brightness. From what I hear the Epson is very bright; is this one at least bright enough to use during the day with the blinds slightly open?
David S Posted Nov 20, 2011 12:49 AM PST
According to Optoma's website, the HD33 does support side-by-side and top-bottom 3D WITHOUT a separate box like the 3D-XL. It says, quoted from website: "The projector supports all HDMI 1.4a mandatory 3D formats, side-by-side format and top and bottom format to allow users easy hook up with peripherals that can deliver 3D content. As a full 1080p, it supports all 1080 p formats natively without needing an Optoma 3D-XL box converter box. As with all 3D displays, a 3D source (such as a 3D Blu-ray player or gaming system), 3D content and 3D glasses are required for 3D viewing."
RobB Posted Nov 25, 2011 10:17 AM PST
I wish there were some metric for rainbow effect and black levels. I had to return the BENQ6000W due to rainbows even though I seldom see them on my well-worn Infocus 4805SP. Probably the 2x brightness and increased constrast made them more visible. In any case I am considering the HD33 but I am afraid it too will have rainbows. It sounds like it has fewer but other web sites claims that they are still visible.
Rod Posted Dec 8, 2011 7:56 PM PST
I'm trying to decide on a screen to go with this projector. Size isn't really the issue as the room it will be in is 14'w x 30'l x 8'h, however I'm wondering about two things: 1) is there a difference between a so-called '3D Ready' screen vs one that doesn't have that in the product description and 2) 'Reference' vs a non-reference screen. Is the picture that much better for 2 or 3x the price? Any recommendations?
Jonathan Posted Dec 16, 2011 5:19 PM PST
Since this HD33 and the Epson 8350 are similar prices (this is $200 more than the Epson 8350, and I don't care much about 3d?!?! Which projector would you choose? It does appear ProjectorCentral likes the 8350 over the Optima HD20.
Ken Posted Dec 31, 2011 5:15 PM PST
Ive read the questions and reviews... I find this very helpful... I currently have an optima 2D and was just waiting for the 3D price to become affordable.. I'm ready to but the HD33 Optima... Without hesitation! Thanks
Ken Posted Dec 31, 2011 5:49 PM PST
I do have one question... I have a 22' projection length... And currently with 2D Optoma I have a 13' diagonal... Can I expect the same in 3D for the HD33?
Dave Posted Jan 8, 2012 5:40 PM PST
Hi Bill!

I enjoy your informative reviews. My question: in your opinion, how much better (if at all) is the Sharp XV 17000 compared to the HD 33? I am only interested in 3D, as I will continue to use my Sharp XV 20000 for 2D. Bottom line: is the Sharp 17000 worth the extra money compared to the Optoma HD 33?

I appreciate your candid response.
David Posted Jan 16, 2012 6:01 PM PST
I don't think making a passive 3d projector is much more expensive then active 3d. The LG projector is overkill. The added cost would come in purchasing a screen that preserves the polarization of the light. All the projector needs is a single polarizer. There are already third party devices on the market to convert projectors from active to passive 3d such as Tru3d. I already own an LG 55LW6500 LED panel and after watching passive 3d I will never go with active 3d again. Perhpas the price of the LG is more reflective of engineering overkill and a thin market than the actual cost to produce the projector.
sskale Posted Jan 18, 2012 2:31 AM PST
Hi ,

I am planning to go with the uk version of HD33( Puremotion4+10000:1 contrast). i want to go for 150" Diagonal 16:9 screen , I have the placement facilities for projector(floor or book shelf placing by trial and error), and screen ( ceiling mount), and have the distance to project. My question is if i watch movies with light off, and very little fugitive ambient light, will the 1800 Lumens for 150 screen be enough and how will be BRRIPS(BDRIPS)(4Gig)look(2D or 3D rips) if i connect a WDTV media player .. will the rips be mercilessly exposed on this big screen or with OPTOMA processing make up for it. Thanks..
JeffH Posted Jan 21, 2012 12:42 PM PST
I just got the HD33CA from Costco.ca. Great deal because it came with two glasses and is on sale at the moment with $250 off. Projector replaced the HD72 - It is beautiful! Picture is great - noise is low - 3D works once you figure it out. I highly recommend this projector. Costco also extends warranty to 2 years.
carl paswisty Posted Jan 24, 2012 1:12 PM PST
I am wondering if the radio frequency emitter will have any chance of causing interference with wifi devices and cordless phones? Carl Paswisty!
Joao Posted Feb 12, 2012 4:36 PM PST
Hello, I recently buyed an hd 33 and he cant connect to my ps3 at 1080p...he only connects in 1080i and wont detect the ps3 3d... My hdmi cable is 1.4....what can i do for him to r ecognize the ps3 at 1080p and to activate the ps3 3d!!! Thanks
palavering Posted Feb 25, 2012 7:15 PM PST
No, the RF signal does not affect any WiFi equipment. It's a different frequency, as I understand it.
Mike Posted Feb 29, 2012 10:57 PM PST
Just got hd66 and Rainbow effect is pissing me off- tried plenty of setting tweaks and its just getting worse- so as of now its going back to B&h photo and I was thinking on getting HD33- does it have the same rainbow problem? Besides 3D and 1080p hd33 vs hd66 has better colors and black?3
Joseph Posted Mar 12, 2012 12:02 PM PST
I have a question.Is there any way to watch a 3d movie with passive glasses using optoma hd33? I know for the optoma hd33 we need a 3d-rf rechargeable glasses(active glasses).But ,Is there any passive 3d glasses working with it? Thanks
Illrigger Posted Apr 4, 2012 4:25 PM PST
Joseph - no, passive glasses use an entirely different method to display 3D images than active devices like the HD33.

Think of it this way - passive devices play both 3D frames at the same time, and the glasses filter them so each of your eyes see only one of them. Active devices play one frame at a time (extremely quickly), and the glasses turn on and off quickly so each of your eyes only see the frame they need to.
Frank Posted Apr 5, 2012 12:42 PM PST
I've never seen this rainbow effect on my HD66 that people keep mentioning. Could it be because I only use in for watching movies in a theater room with little ambient light. P.S. Have loved it for many years, now looking for a PJ with horizontal keystone correction.
Paul Posted Apr 8, 2012 2:17 PM PST
I'm planning to upgrade to a 3D HD projector. My boys say I need a screen with silver in it. What exactly are the screen requirements for 3D? I want to be sure to get one that will maximize my visual experience.
Tanmay Mishra Posted May 17, 2012 5:33 AM PST
Need Help .... Recently I bought Optoma HD33 3d projector with panasonic DMP-BDT220 3d bluray player. But I am facing a major issue, As my projector is not detecting the player when connecting through HDMI but it find it easily when connected through any other port ( RCA, component, S-video). To test projector I connected it my laptop, desktop, samsung galaxy s2, TV set top box through hdmi port and it worked fine for all. Then I connected the player to my LG HDTV (not 3d) through HDMI and that also worked without any problem.

Please let me know what is wrong between projector and the player and how to resolve it. Seems like some kind of handshake issue.
Peryhelion Posted May 23, 2012 3:30 PM PST
Rick, I have the same problem. Sometimes I have to turn off the projector from the wall because the remote controler does not work. Something block the projector. Has anyone had a similar problem?
Ramesh Makwana Posted May 28, 2012 7:15 AM PST
I have Samsung 40" LED 3D TV, with 3 Pair of Samsung RF 3D glasses 2011 models. Will these glasses compatible with HD33? I would save at least $300 if i can use same samsung RF glasses with HD33.
YKK Posted Jun 2, 2012 1:54 PM PST
I have the same problem, any HELP?
Greg Posted Jul 25, 2012 11:38 AM PST
Initially I had the Epson Powerlite 5010. I had a lemon and tried to contact Epson for exchange. They gave me a lot of trouble because I bought from Ebay. They said it is considered a 3rd party and will not honor it even though it was brand new with warranty card. Epson customer relation sucks. I returned it and after reading the excellent review of this Optoma HD33 I decided to go with it.

Wow I was aesthetic with the quality for half the price of the Epson 5010. The DLP image seems sharper and very bright(standard) then the LCD's.The HD33 is quiter then Epson 5010 too. The best part is half the price of the Epson. This is the cheapest 3D in the market.

I was really blown away. my friends said movies projected seems better then movie theater's. I am so pleased. I would recommend the HD3300 as it comes with 3 years warranty including the bulb. This model only 1 year warranty but $300 cheaper. I highly recommend this. You will not regret.
daniel isaac Posted Jul 26, 2012 8:20 AM PST
please i just want to know ,some important issues about 3D connection. i actually connect ,one mini home cinema theater, initially it showed 3D but wile i on the system again it stop to show please i need to update how to configure it thanks ,i have the glasses the 3D glasses. please hope to hear from you
Beechy Posted Aug 5, 2012 6:55 AM PST
Did you ever have any luck finding this out ? I'm in the same boat now
Edu Posted Apr 7, 2013 5:44 PM PST
This is my last desperate attempt to learn more about their products ... Antero Eduardo Moran'm from Mexico, I'm about to buy the Optoma HD3300 (repaired or rebuilt) because Optoma SUPPLIERS for Mexico said the HD33 and HD3300 already been discontinued ... How real is that?, If so ... HD3300 could only buy the second hand ... Why no reviews of the HD3300 projector? I've come to think that went defective and wants optoma disappear from the planet ... Please help me not to do ...

Optoma? Going to get new projectors for games and 3d full hd and come to Mexico and when? Are the new ones are much better than dh33 or might even not separated much? ...

Thanks for your time and I look forward to your e mail responses (an apology for my bad English ... I am using the google translator
Mike Posted Jun 10, 2013 6:11 PM PST
I can tell you without a doubt that Epson support is the best I've ever dealt with, bar none. I bought an Epson 8100 and the bulb dimmed at about a year of 4 hours daily "living room" use. I contacted them and they sent a new bulb free, which they should have done (as their bulb life claims were higher). Though not by much if you figure in higher brightness usage. Another year goes by and another bulb wears out. I call them and they send me another bulb! All they asked me was hour used! A year out of warranty! I'll say nothing but good things about Epson any time I'm asked!

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