johank
Established
Any hints on hoods for Biogon 21 and 3,5 cm when using filters?
Bill Jones
Contax Lens User
Filters
Filters
Neither lens is really filter friendly. The 40.5 mm filters tend to vignette. I would recommend getting a step-up ring and using a 46 mm or larger filter. 40.5 mm fiter with 46 mm glass and front rings were what Contax used on the 35 Biogon and 50/1.5 Sonnar in the late 30's. If you want a hood the Contax G 28 mm Biogon hood works, but you could also buy a junk filter and knock the glass out for a lot less money.
Bill
Filters
Neither lens is really filter friendly. The 40.5 mm filters tend to vignette. I would recommend getting a step-up ring and using a 46 mm or larger filter. 40.5 mm fiter with 46 mm glass and front rings were what Contax used on the 35 Biogon and 50/1.5 Sonnar in the late 30's. If you want a hood the Contax G 28 mm Biogon hood works, but you could also buy a junk filter and knock the glass out for a lot less money.
Bill
johank
Established
Thanks for information and hints.
Johan
Johan
johank
Established
Any hints on sunshade for 21mm with filter, Hasselblades 38mm Hood would block any viewer.
Johan
Johan
Sejanus.Aelianus
Veteran
I met a German chap in Austria, umpteen years ago, who was using one of those amazing Contarex Hologon cameras. He had a home made lens hood that covered the whole camera with a slot for a cinema size gelatin filter, so he could see the effect of the filter in the finder. The whole thing was attached in place of the camera handle, with a cable release in a press camera handle on the side.
Heath-Robinson and Rube Goldberg would have been hard pressed to invent better but he claimed it worked well
Heath-Robinson and Rube Goldberg would have been hard pressed to invent better but he claimed it worked well
Bill Jones
Contax Lens User
Johank,
The 46 mm filter with the extra (junk) ring would work for the 21 mm. I've used my 21 mm Biogon since 1967 and never had a lens hood on it. This is despite the fact that I always use lens hoods on all other lenses.
Bill
The 46 mm filter with the extra (junk) ring would work for the 21 mm. I've used my 21 mm Biogon since 1967 and never had a lens hood on it. This is despite the fact that I always use lens hoods on all other lenses.
Bill
johank
Established
Thanks Bill I will try.
Johan
Johan
Ronald M
Veteran
Some filters have glued in retaining rings, some screw in. Have yet to find proper solvent for glued in.
Bill Jones
Contax Lens User
Ronald,
Try putting the filter in boiling water for about 5 min. Be careful handling as both the ring and glass will retain a a lot of heat. With a junk filter you could also just break the glass out.
BNill
Try putting the filter in boiling water for about 5 min. Be careful handling as both the ring and glass will retain a a lot of heat. With a junk filter you could also just break the glass out.
BNill