Originally Posted by Reinhold
Some time ago, I made a drawing which extrapolates the data in a nomograph I found in a Kodak Technical Handbook.
Using the traditioal rule of thumb which suggest that a "normal" lens focal length is about the same as the diagonal of the film, a "normal" lens for 11x14 would be about 450mm.
By the Kodak data, 450mm would be considered a "short normal" (120mm on a 4x5).
I use a 450 on my 8x20 Canham as a "short normal" lens. (8x20 diagonal is the same as 11x14)
By Kodak, 600mm is closer to a tru "normal" for 11x14 and 8x20. (165mm on a 4x5)
I use a 600mm on my 8x20 as a "normal normal" lens.
By Kodak data, "moderate telephoto" would be in the 760 to 850mm range. (200~210mm on a 4x5)
I use a 760mm Rodenstock Apo-Ronar as my "moderate telephoto" lens on my 8x20.
My .pdf graphic may be a bit hard to read, I made the lines and text too small, but here it is four your edification...
Oh, and if you're asking if I have a lens for sale, that 760 Apo-Ronar is available here:
A delayed thanks for the chart and the lens offer.
Everytime I find a film or paper that I like, they discontinue it. - Paul Strand - Aperture monograph on Strand