Auteur: Dan Fromm
Date: 30-08-2004 01:02
Hmmm. I use a 4"/5.6 Enlarging Pro Raptar stuffed (literally!) into a #1 and held in place with darkroom tape for macro work. On my 2x3 Graphics it is very useful from 1:8 to not quite 2:1; in that range it does as well as a good 100/6.3 Luminar. I've tried the lens at infinity. There it passes light, forms an image, and covers the format, but image quality is poor. For work at distance my normal lenses for 2x3 (101/4.5 Ektar, 4"/2.0 Taylor Hobson) are much better.
As mentioned here recently, I've used a 75/3.5 Boyer Saphir B on my Graphics with much the same results except that at infinity the Saphir B does not cover 2.25" x 3.25" (in metric, 57 x 82 mm). The Saphir B is in M39x1, I happen to have a female M39x1-to-male M40x0.75 (front of #1) adapter made for me by skgrimes, so it was all very easy. The adapter cost $US 35 several years ago; I believe the price hasn't changed.
If the lens' rear cell will fit inside the front of the shutter and does not interfere with the blades, it may be possible to use darkroom tape to attach a mounting flange to the front of the shutter and then screw the lens into it. Inexpensive, ugly, works.
Some process and repro lenses' cells are threaded and have the right spacing to go directly into shutters. Examples include Repro Clarons, most G-Clarons, some Apo-Ronars, some Kowa Graphics/Computars, ... I don't know how highly these lenses are esteemed in France, in the US users report they work well at all distances.
I understand well that parsimony is a virtue, but ...
Dan
|
|
