Optoma EX531p User Reviews
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I got this on eBay for £75 which is a great deal for a projector whose native resolution is XGA (768 lines) and uses DLP which is supposedly the technology of choice. It is very sensitive and if nudged slightly will drag the image quite far. It only has vertical keystone. Fairly frequently scrolling waves (or whatever they're called) can be seen on darker images.
Any Problems: Recently for me lots of little specks, both black and white, have been appearing down the right-hand side of the image, and they can't be on either the zoom lens or the focus lens because when I turn them they don't rotate. There are more and more of these every day and I'm afraid it may become unwatchable before long.