I have finally set ceiling mounted my JVC RS10 which has allowed my to complete my CIH setup. I have a Panamorph modified (to avoid ghosting) UH380 at a throw distance of 11.6 feet (throw ratio is 1.66). I am getting a slight but real decrease in sharpness with lens in place. It still looks good, but I want as good an image as possible.
I realize my setup is not ideal (both TD and TR). As this is my first attempt at CIH, I just want to make sure it isn't how I have the lens mounted/setup.
1) Basic question - Does it matter which way the prism is facing (hard to explain but it can be mounted with prism facing right or left). Panamorph manual seems to imply is doesn't matter if I am reading it correctly.
2) I adjusted the focus with the lens in place, but it still seems slightly less sharp than with no lens. Is this just a matter of my short throw distance? I know the sweet spot seems to be 14-17 feet. Is there a corrective element designed for shorter throws?
3) For those using the UH380 or UH480, would you say that sharpness is identical with or without the lens for you? When I put up the focus grid with lens in place, it still looks pretty sharp, but the picture appears a bit sharper when I remove the lens.
Any advice?
I realize my setup is not ideal (both TD and TR). As this is my first attempt at CIH, I just want to make sure it isn't how I have the lens mounted/setup.
1) Basic question - Does it matter which way the prism is facing (hard to explain but it can be mounted with prism facing right or left). Panamorph manual seems to imply is doesn't matter if I am reading it correctly.
2) I adjusted the focus with the lens in place, but it still seems slightly less sharp than with no lens. Is this just a matter of my short throw distance? I know the sweet spot seems to be 14-17 feet. Is there a corrective element designed for shorter throws?
3) For those using the UH380 or UH480, would you say that sharpness is identical with or without the lens for you? When I put up the focus grid with lens in place, it still looks pretty sharp, but the picture appears a bit sharper when I remove the lens.
Any advice?