|Posted: Thu Nov 02, 2023 2:04 pm Post subject:
|I've got a 135mm f/2.8 "Fontron" with very similar mechanical construction, 10-blade aperture, 332gm with a 58mm filter thread, albeit a slightly different font for the lettering.
The front end of mine slides forward about 1cm to create a basic lens hood.
Mine arrived as part of a job lot with an Exa camera that was fitted with a Tessar I wanted.
I've yet to try the Fontron, but they do say "there's no such thing as a bad 135mm"