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Review Contents
Ease of Use
Intended Use:
Mobile Presentation
Optoma ML300 Projector Optoma ML300
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Street Price: n/a
Weight: 2.0 lbs
Aspect Ratio:16:10
Lens Shift:No
Lamp Life:20,000 Hrs
20,000 (eco)
Warranty:1 year
Connectors:  Composite, VGA In, HDMI, MemoryCard, USB (x2),
Video Formats:  480i, 480p,

Optoma ML300 Pocket Projector

Mark Davidson, July 9, 2012

Test Results and Connectivity

Brightness. The ML300 fully lives up to its 300 lumen rating, at a measured 298 lumens in its brightest mode. Other LED brightness mode presets ranged from 173 to 259 lumens. In my tests, this proved bright enough for comfortable viewing of a 77" diagonal image in theater dark lighting, with the same size still useable for short sessions, if a little washed out, even with moderate ambient light.

Good brightness uniformity. The projector also did a good job maintaining uniform brightness across the screen in my tests, with a measured 80% brightness uniformity. The difference was barely enough to see on a solid white screen and impossible to see on a screen broken up by text or graphics.

Good Connectivity. The ML300's connection options count as a strong point. The array of connectors on the back and one side include a standard VGA port for a computer, a mini HDMI port, a microSD card slot, and a USB A port for a USB memory key or for Optoma's $29 optional Wi-Fi dongle. In addition, there's a micro USB connector for (a) direct USB display from a computer and (b) transferring files to and managing files in the 2GB internal memory. Finally there are two miniplug jacks;one is for stereo audio and composite video, and one for stereo audio output.

Optoma says that the projector can read 14 file formats directly from memory, including the most common image, video, and audio formats. In my tests I confirmed that it can read JPG, PDF, XLS, TXT, and Word DOC files.

Also worth mention is that Optoma's optional Wi-Fi dongle works with PCs, Macs, and both iOS and Android devices. I had some setup problems with both a PC and an Android phone in my tests, but only because critical information wasn't included with the projector. The setup process itself is straightforward, and Optoma says that it's working on including more complete instructions.

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Strong Points
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Limitations and Conclusion
Review Contents: Strong Points Testing Limitations and Conclusion
Comments (9) Post a Comment
adrian Posted Jul 27, 2012 5:40 PM PST
hello. i just bought a optoma ml300 and,after 1 hour of working is starting to get hot and shut down working more when in the room is very cold..usually is working like the..or this one got a problem? thank you!
Charles Dowding Posted Jan 16, 2013 1:16 PM PST
Why ony one USB port, which is used by the memory stick, leaving none for the remote controller's USB?
Humberto Reyes Posted Jan 21, 2013 6:29 PM PST
I just bought a optoma ML300 and,after 5 minutes of working is starting to shut down ... Why ? , buyed on January 15 on Best Buy....
RVG Posted Jul 30, 2013 10:04 PM PST
I bought a Optoma ML300 for my Corp- Office , and after 10 - 15 minutes of working, a ( fan+caution ) symbol is coming and projector gets shut down. We're from Kuwait and we purchased from X-Cite by Alghanim Electronics. Then I gave back to their customer service center , they checked and they returned after testing. Still I'm facing the same problem. What should I do?
stop using it Posted Sep 19, 2013 3:12 AM PST
stop using it - put it away!
Vishnu Posted Nov 9, 2013 3:05 AM PST
HI I bought ML300 a week ago. Product has over heating problem and gets switched off after a sign on screen shows that fan is not working. Every time when i switch it on , at least once in 10 minutes the over heating and switching off happens. I can not return this product because I am outside US and bought this while coming from US. Any suggestions how to over come this. Thanks.
EM Cardenas Posted Jan 30, 2014 3:27 PM PST
I bought it one year ago, and since the second month starting getting hot and shutting down, the customer service is terrible, I have returned the item 3 times and I am having a hard time getting another one, I suggest to pay a differente and get another model, but optoma did not accept.

They advertise the product saying that you do not have to replace a bulb like regular projectors, and that is just right, because you have to replace the whole crap of unit.

kozmoz4 Posted Oct 15, 2014 5:07 AM PST
I had the fan problem also. After I sent it back like 5 times they got the problem fixed. Now I am trying to use it with every device I have. How do I connect it to my Android phone? Do I need a micro USB to mini HDMI cable?
Steve Posted May 24, 2015 12:34 PM PST
I am unable to my Optoma ML300 to work with my Surface Pro3 using the USB mini port. I am unable to download drivers when I connect to the USB. Please send me a link to download the drivers.

Overall, I am pleased with the ML300. I have used with my laptop with no issue. It has met all of my mobile presentation needs.

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