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spoolman
06-06-2009, 12:46 AM
I was recently told by the person repairing my Kodak #8 Premo plate camera that the aperture stops are US format and the crossover with regular f-stops is f16.Can anyone explain what the difference is between US stops and f stops?

Thanks

Doug

Steve Smith
06-06-2009, 12:49 AM
If I remember correctly:

US - 'Normal'

16 - 16
8 - 11
4 - 8
2 - 5.6
1 - 4

I have a Wray enlarging lens with the 1, 2, 4, 8, 16 markings.

Steve.

Sirius Glass
06-06-2009, 08:42 AM
Thanks, I always wondered how the US system and the standard aperture system compared.

Steve

spoolman
06-06-2009, 12:08 PM
Thanks for the information, Steve.It will help a lot

Doug:)