jpfisher
Well-known
F/1.4 for all three.

When the Sonnar-C 50mm f/1.5 was released the MTF graphs at full aperture looked very encouraging. They just didn't tell us that such sharpness was not available if focusing with a rangefinder (due to the focus shift debacle).
49mm filter size is also very common with Pentax lenses, even recent ones.... 49mm is a standard for old Minolta MD amateurs.
Biogon 2/35: Distagon 1.4/35
43mm 49mm Filter size
68mm 87mm Length
240g 381g Weight
For me FTM of Sonnar-C 50mm f/1.5 full open was just discouraging.
See http://www.zeiss.com/content/dam/Ph...center/datasheets_zm/csonnar_1-5_50_zm_en.pdf
But this lens is not designed for shooting test challenges (newspaper sheet on the wall or other). I Got one and enjoy it.
49mm is a standard for old Minolta MD amateurs.
I
As the Zeiss rep explained it, the 35/1.4 Distagon was intended to be better than the pre-FLE 35/1.4 Summilux ASPH (e.g., by having less focus shift), albeit in a larger, more traditional design (no aspherical elements), but not as high end as the current 35 'lux ASPH (FLE).
in the end apparently they ended up with two 🙂
dang, toooo many NEW 35's to think about
35ultron... for min focus 0.5
35summarit... for aspherical glass
35zeiss ... for 1.4
i once met an elderly lady photographer on her way to ICP to develop a huge bag of film...
She stated the only focal point for her was 35 and she had five 😱
hmmmm, beginning to understand her philosophy
