Conclusion: I think the Optoma PK320 is the greatest little projector around! That’s even though I personally don’t really have a need for a pico projector. I really liked the older PK301, but I love this PK320. OK 100 lumens still isn’t a whole lot, but as I mentioned at the start of this review.
Pros: Higher resolution than most Picos at SVGA 854×480, Has a microSD card slot for loading presentation slides, photos, videos…, Accepts HDMI, Has a USB port to read files from, 45 measured lumens with internal , 102 lumenswith AC power or external battery pack, AVI, MOV, MP4, 3GP (Common video forma...
Cons: 40 or 100 lumens still isn’t very bright on any average sized projected image – needs a fairly dark room., Battery lasts only 45 minutes or so in brightest (but will last almost twice that long in their “eco” (Standard) mode), Not quite as small as most Pico projectors., More expensive than many ...
Summary: Overall, the PK320 is an excellent portable solution for small group business presentations, showing off your pictures or videos on the road, or even for turning your hotel room into a cinema when you’re on holiday.
Pros: Small and light, easy to use, good connectivity, reasonably bright projected image
Cons: Projected image not an accurate rendering of original, quite pricey for casual use
Excerpt: Its footprint is only slightly larger than an iPhone 5, but the Optoma is blessed with mini-HDMI, micro-USB, micro-SD, composite video and VGA connectors – so it will play nicely with pretty much any device. If you want to travel light, it also features 1GB of onboard storage.