I wonder why so many 100mm and 105mm lenses are only for 6x9, while both the 90mm range and 110mm (just Schneider?) offer choices covering 4x5. I like my 135mm, but I wonder at some other ranges of choices. Eventually I will get a 75mm, though it seems that about 100 to 105mm would be a better between range choice than a 90mm or a 110mm (and that Schneider is not cheap).
Ciao!
Gordon Moat
A G Studio
Years ago when I first got into LF, I chose a 135 as a natural progression between 90 mm and 210 mm. 50% over 90 goes directly to 135, and 50% more goes to about 202ish. I thought a 150 leaves the gap a bit unbalanced.
135mm is the diagonal dimension of European 9x12 cm plates, which is what a Tessar design lens is designed to cover. The focal length naturally migrated to 4x5 users because it is the widest "standard" of reasonable speed, size, and cost, and the negative is large enough to allow cropping if the final negative takes in too much.
Wilhelm (Sarasota)
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