A Bay 50 yellow-green filter for my 500C is marked on the rim "2x" and "-1". Forgive my ignorance, but do I open up one stop or two? I'm assuming one stop but would appreciate words of wisdom from those more knowledgable than me!
Hasselblad B50 Y/G Filter Factor
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- Thread starter KeithM
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Open one stop(2x). Any color filter will reduce light to the film. No idea what the -1 means in Hasselblad speak though.
FWIW 4X=2 stops. 8X=3......
FWIW 4X=2 stops. 8X=3......
2X is the shutter speed factor: You change speed by 2x, so from 1/100th to 2/100th = 1/50th.
-1 is the f/stop factor, so the number decreases by 1 step: f/11 changes to f/8.
- Leigh
-1 is the f/stop factor, so the number decreases by 1 step: f/11 changes to f/8.
- Leigh
OP
OP
Well that clears that up, then. Open up one stop it is 
Thanks for the replies.
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