|Originally posted by Don Rombach
I think it should also be considered that the manufacturer developed these projector placement specs for a reason.
Sigh... OK, you are new to this, so I'll try to be nice.
Please re-read my post. I took some time to write it. The "specs" the manufacturer "developed" were for 4x3 images. That is NOT what you are projecting. You can decrease the throw distance and get EXACTLY THE SAME WIDTH IMAGE on the crt phosphor as you would with a 4x3 image. Why? Because the image is not square on the crt phosphor. A point that I think you missed. It's a trapezoid, keystone shape. So draw it on a piece of paper, if that helps. Make it 4x3, measure the width. Then truncate it, cut of some of the top, some of the bottom, and it's now 16x9. It's also narrower. Decrease the throw distance about 6% (I did the math once, years ago now). Now you have an image that is the SAME width as the 4x3 image. Have you done anything bad or pushed the projector to do this? NO!
Now I'm done. You guys can debate this all over again if you want. There was a time when Roger Galvin didn't believe I was right about this, but he changed his mind. Sony used my throw distance specs for trade show setups after they saw the improvement in picture.
Personally I push them further than this, and have many happy customers who will tell you how good the picture is, but hey, it's your projector.
I just did a G70 setup yesterday and I measured 9.8 foot lamberts on a 1.3 gain Studiotek 130, contrast at 80. (Gretag Lightspex, fiber optic probe)