The simple answer to this has eluded me in figuring it out.
OK, on my 8x10 I have a fresnel lens mounted behind the ground glass. If I view the image projected on the ground glass by my 12 inch lens, the fresnel lens allows me to view pretty much all of the image. Now if I view the image projected on the ground glass by my 120mm lens, only the central part of the projected image is viewable.
In order to view more of the image that my 120mm lens projects on the GG, would I have to substitute a fresnel lens with a shorter or longer "focal length"?
thanks in advance
Bookmarks