_tom
Established

Wind tunnel tube in the Aerodynamic Park in Berlin-Adlershof.
[Zeiss ZM, Biogon T* 35mm f/2, Kodak Professional TriX]
Great lens, wish it was smaller.
I don't see many complaining about the size of the Summicron 50.
Guess what? The Biogon is identical in size.
It's not that easy. Size is more critical for 35mm lenses than 50mm lenses, because the 35mm frame lines are so much wider. A typical Summicron 50 will not touch the 50mm frame on most cameras, but the similar sized Biogon 35 will surely block part of the 35mm frame. In other words, The Summicron 50 can afford to be the same size as the Biogon 35, but it's not necessarily true the other way round. 🙄
A bit of finder blockage is not the end of the world, but personally I don't like when it when lenses intrude too much into the frame. One reason I sold the CV Nokton 1.5/50. Of course YMMV.
I want to see a picture of the viewfinder when the biogon 35 is placed on the M camera, how much is blocked?