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I eagerly awaited your review of the Epson 750HD. Although I understand your reason for limiting your viewing to 60 inches I was surprised that you did.

Two days prior to your review I experienced the most impressive 3D I have ever seen. I watched several SBS video clips including Avatar and the Avengers. My setup was simple: a stacked pair of HW300T projectors, two pair of 3D glasses (from watching Avatar and the Avengers), a HTPC, and a metallic painted piece of foam board. I balanced the colour by offsetting the strengths of each device: the screen had a blue bias, one projector was green biased and the other red biased. The colour was stunning. The gray/silver in the screen increased the contrast. Outdoor scenes were simply mesmerizing.

The 3D experience simply blew away all my 3D movie experiences. As impressed as I was, I still felt like I was lacking the full 3D effect. The most convenient foam board that I could find to use was 40x60 inches or about 70 inches (My prior screen was 30x40 inches with very poor contrast). I could never get completely engrossed in the 3D experience because it felt like I was looking at events through a hole in my wall. I was also constantly aware of scene changes because the depth of feel changed radically.

This last point surprised me. In 2D films, I constantly watch cameras switch from actor to actor as dialog changes. That is not very distracting but in 3D I found my self annoyed when close-up dialog scenes switched to wide action scenes because the 3D depth changed drastically.

Have you noticed the same effect (distracting changes in 3D depth of feel) when you review 3D material? If so what size image were you watching?

I also noticed that crosstalk seemed to be a function of how close I was to the screen. The closer I was to the screen the more crosstalk I saw. I saw the same effect on a LG 3D TV.

Another item I would like to mention is that in building my 3D system, I created a very high gain screen (using the flipside of the foam board but with more layers of spray paint). I created even more compelling 3D images but the down side was the grainy picture (your screen article warned about high gain screens). I loved the brighter picture but I could not handle the graininess.

I decided to use the lower gain screen (one layer of paint). My best guess is that the viewing angle of my screen dropped dramatically at about 30 degrees in 2D. Since my 3D was dimmer from the start it seemed that my viewing angle doubled before I noticed much dimming. At that point there was little change in the 3D effect.

If you do get a chance could you comment on 3D on the 750HD with a 120 inch image?

Thanks for the review.