Recent content by francus

Many thanks to all, I got a discomforting reply from Navitar: Their telephoto converter 1.5 costs $2700.00. So it is much more than the projector and out of contest. From your replies, particularly It seems I cannot adapt some used complete lens for this purpose. So, finally there is no way...

Many thanks for your reply, but there is one thing I do not understand: the above equation considers the standard case of a camera with a small sensor and a large object to be photographed and the lens in the middle. The light goes from the large object to the small screen. Apparently my case...

Hello, I am new to this forum and know very little about it. But perhaps somebody can help me. I have an Epson 2040 projector. The beam it projects fits into the screen at a distance of about 4.5 meters. But logistically I need to put it at 8 meters from the screen, so the projected images are...