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BenQ HT4050 Projector BenQ HT4050
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10000:1 Contrast Ratio
2000 Lumens
Full HD 3D
$1,140 Street Price
$1,299 MSRP

BenQ HT4050 Home Theater Projector

Evan Powell, November 20, 2015


Brightness. The HT4050 is rated at 2000 lumens. It has four factory preset operating modes and two user programmable modes. With the lamp on full power and the zoom lens set to its widest angle position, our test unit produced ANSI lumens readings as follows:

BenQ HT4050 ANSI Lumens
Normal Lamp
Eco mode

The HT4050 has a 1.6x zoom lens that will curtail light output by up to 23% as you move from its brightest, most wide angle position, to its most telephoto (longest throw for a given image size). This is less light loss than is typical for zoom lenses of this range. By comparison, the shorter 1.3x zooms on the HT2050 and HT3050 curtail light by up to 27%. As you see in the table above, you can also reduce the projector's brightness 30% by putting it into Eco mode.

BenQ HT3050 Remote

Brightness Uniformity. Based on the nine quadrant ANSI lumen meter readings, our HT4050 measures 75% uniformity with the least bright area in the upper left and the brightest in the lower center. While this is lower than ideal, our test sample shows no obvious vignetting that is visible in a video/film image.

Color brightness is outstanding compared to many DLP projectors. In Bright and Vivid modes it measures 82% of white, in Game mode it measures 77% of white, and in Cinema it is the ideal 100% of white.

Rainbow artifacts. Infrequent, but they appear a bit more often than they do on the HT3050 and HT2050. When they do occur they are smaller and dimmer than typical rainbows on competing units. We believe most viewers will consider them to be rare and inconsequential.

Input lag. The Bodnar meter reports a lag of 96 ms with frame interpolation off, and 145 ms with it engaged.

Fan noise. Audible noise in full power mode is relatively low in both pitch and sound pressure. It is slightly more audible and somewhat higher in frequency than the HT3050 when the lamp is on full power, but it drops to slightly quieter than the HT3050 when put into eco mode.

High Altitude Mode is required at elevations above 1500 m, or about 5000 feet. In this mode the fan noise is increased, but it is still quite livable and relatively unobtrusive compared to most units in this price class. If you live at high altitudes, all of the BenQ home theater projectors tend to offer comparatively low fan noise in high altitude operation, although if you want to spend more money you can get quieter units for well under $2000.

Lamp life. BenQ estimates lamp life at full power to be 2000 hours in Normal lamp mode and 4000 in eco. Replacement lamps cost $249.

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Key Features
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Set Up
Review Contents: Picture Quality Key Features Performance Set Up
  Limitations and Conclusion

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Comments (9) Post a Comment
Erik Herman Posted Nov 30, 2015 7:53 AM PST
What picture mode was input lag measured from. I see the projector has a "game" mode. I'd be interested if lag is different in this mode with all extra processing turned off (FI, pixel enhancement, etc...). Usually, game mode limits extra processing and improves lag times.
dhanji Posted Dec 7, 2015 11:49 AM PST
very nice and resoneble price
Felix Pimentel Posted Dec 21, 2015 4:08 PM PST
BenQ has released a new firmware version for the HT4050 that * Reduces lag time * Reduces source detect/connect time

Please contact BenQ Tech Support for information on how to get your projector upgraded to the latest firmware.

Regards, Felix Pimentel Sr. Product Marketing Manager BenQ
Kazuya Posted Jan 6, 2016 7:30 PM PST
Is this projector able to be used with a curved screen?
Gabriel Posted Jan 11, 2016 9:02 AM PST
So the Frame Interpolation is not able to give the same effect as using SVP (Smooth Video Project) software in my HTPC? I want it to look more like Hobbit 48fps but also need it to be able to do this for 3D not only 2D as for 2D I can already do it with my HTPC. This will be a main factor for me. BTW ..."without imparting any hint of undesirable digital video effect (or soap opera hyper-reality" undesirable to you. Others prefer things to be smooth like real life not a slideshot fest like current 24fps movies but to each its own.
jaxon Posted Jan 15, 2016 6:00 AM PST
Hey Mate is there one for the 1070 as It lags a fair bit when I online game.

Kind regards

J Avery
Erik Herman Posted Mar 26, 2016 6:23 AM PST
Any word on how much the new firmware version reduces lag time? How does one upgrade the firmware on the projector (do you need to send it to them?) Thanks. Trying to decide between the 3050 and 4050. The motion and pixel enhancers of the 4050 have me leaning that way.
jordanliaw Posted Jun 5, 2016 10:51 PM PST
Will HT4050 support 1080p@60Hz input and convert it to 1080p@120Hz output whth Motion ehancer enabled, or not?
Evonimos Posted Jun 15, 2016 12:39 PM PST
Erik, I had the same questions regarding the lag time improvement of the Benq HT4050/W3000 with the firmware update. I am interested in that specific model mostly because of its longer throw compared to the otherwise exellent value-for-money HT2050/W1110. I don't find frame fnterpolation or image proccesing appealing for my purposes. Quite on the contrary, I am a firm believer that a good source material (as is a film in 1080p through HDMI) is always better with image proccessing turned off or set to minimum. Matters of opinion I know..

Anyway, I called Benq technical support (UK) and asked them to confirm that such update is indeed available. The guy I talked to was kind enough to inform me that such a firmware update does exist and it improves imput lag time among other things. According to him, the input lag was brought down to about 33-49 milliseconds if i remember correctly. Someone else could call them and double check if i remember the right figures and report back. Or even better, a proffesional reviewer could test it and put an end to all speculation.

I also asked him if the update procedure could be made bu the end user and he replied that it is only possible if the unit is sent to Benq technical support. The reason he said, is that they don't want to risk people damagint their units in the proccess. He also told me that the latest firmware update was released somewhere during April and it has the firmware number 0.23.

Best regards!

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