These are my latest cameras mentioned in previous posts this past month (with no photos). The camera on the left is a Zeiss Ikon Contessa S 310 w/ 40/2.8 Tessar from the early 1970s and on the right a Zeiss Ikon Contessa 35 (early-mid 1950s) with a 45/2.8 T Zeiss-Opton Tessar. Except for the meter on the Contessa 35 they both work beautifully.

The S 310 lens takes 30.5mm filters. Because of the Contessa 35's 27.5mm filter size, all of my Zeiss Ikon Contaflex filters and lens hood (for the 50/2.8) fit perfectly. Happy birthday to me!

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-Marc