At first glance, Optoma’s DLP-based HD33 struck us as the Charlie Brown of this batch. While it was the first 3D video projector in this price range to reach the market, it delivers only 1,800 ANSI lumens of brightness, its zoom lens is limited to 1.2x, and you must buy the 3D glasses separately. Like the Epson, the HD33 doesn’t have a lens-shift feature, but it is the least-expensive model we looked at, and its image quality is at least as good as the other two.
The HD33 comes with an RF emitter for synchronizing 3D glasses, but the emitter is a stand-alone device that must be plugged into a VESA 3D port at the back of the projector. Optoma helpfully provides a bit of two-way tape so you can glue it to the projector housing, but it’s a tacky (no pun intended) solution at best. The glasses Optoma sent for this review (not included in the price of the projector) were considerably dorkier looking and less comfortable to wear than the glasses Acer and Epson provided. Optoma’s glasses are also unique in that they use a rechargeable battery, but that comes with a downside: You recharge them using a Micro USB cable and an AC adapter, which is also not included (although you could plug them into your PC). Alternatively, you can use any manufacturer’s DLP Link 3D-compatible glasses. You can expect to pay about $100 per pair for active 3D glasses of any type.