Sorry, I'm fighting off a cold. The amount should be 200%. I was looking at some work from an older commercial photographer and most of the images were sharp until louped. He stopped down so far for DOF that the images were only useful for small print, but at that size they were amazing.
The el nikkor 300 would be perfect if you want to take photos of something around .025x8x10 in with a camera that uses film that is the size of big print.
It all really depends on your magnification ratio. Reversed enlarger lenses at good for very high magnifications. For 1:1 a macro or process should do fine. Fujinon A's should be good for close up (1:1) and is the C a dialyte or tessar? Either one shouldn't be bad. If you run out of bellows then use a shorter lens. If you want to take a photo of something that is about the size of an 35mm film frame with your 8x10 then use a lens that was designed to enlarge 35mm... If the subject is about the size of medium format then use a medium format lens enlarging lens. Infact it doesn't even have to be any enlarging lens. You can reverse an taking lens to reverse its optimization ratio. A 180mm Apo Sironar S in reverse might work well.
Bookmarks