Originally Posted by Seegs108
I've seen it measured as high as 750:1. Above 600:1 is fantastic in the projection world and rivals most high end DLP machines. Lens quality will most definitely be taking a hit. The amount of zoom stated is 2.06:1 on the 600ES versus 2.10:1 on the 1000ES so we know it's definitely a different lens.
I lost all faith in ANSI contrast measurements online when I noticed the average variance between one reviewer to the next was probably about 50%. I've seen ANSI contrast measurements of certain projectors be stated at 250:1 by one guy, and 900:1 by another (no joke). If they are going to even take ANSI readings, I would really prefer they use another projector to reference off every time they take a reading on a different projector.
For instance, they can say today I re-measured the Runco LS-5's ANSI in the same room next to this same projector at 500:1 ANSI (and without moving the tripod), and now this other projector shows 400:1 Ansi (without moving the tripod). Something like that for safe keeping. It doesn't solve the problem of measuring ANSI, but it helps a little. ANSI contrast is hard to measure correctly, you generally need VERY high-end equipment to do it, the exact tripod angle previously used, and projectors with similar white field uniformity. To really do it accurately, you have to block the white light from bleeding over the dark reading in the checkerboard pattern, and this is not easy to do without creating funnels or some type of carbon-like light absorbing filter.
Otherwise, you at least need to develop a way to squelch or at least evaluate your error from a baseline reference comparison method.