I got a Anastigmat Zeiss 1:6.3 F 250mm By E.Krauss recently. The number on barrel:256; 128; 64; 32; 16; 8; 4.I guess where "256" looks like "F 6.3"(open). Who tell me that the corresponding F value?
Thanks
Daytona
I got a Anastigmat Zeiss 1:6.3 F 250mm By E.Krauss recently. The number on barrel:256; 128; 64; 32; 16; 8; 4.I guess where "256" looks like "F 6.3"(open). Who tell me that the corresponding F value?
Thanks
Daytona
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