Hello Kind people of LFP! I am shooting a new project tomorrow with a 47mm xl on my ebony SV45TE. I have a centre filter IIIc 4x. Can you tell me how many stops to compensate using this with 160 Portra and im using a flash. THANK YOU!
Hello Kind people of LFP! I am shooting a new project tomorrow with a 47mm xl on my ebony SV45TE. I have a centre filter IIIc 4x. Can you tell me how many stops to compensate using this with 160 Portra and im using a flash. THANK YOU!
Schneider’s indication for the IIIc is 2 stops. Incidentally that’s what 4x means.
Here are some technical publications by Schneider:
SCHNEIDER CENTER FILTER DATABASE.pdf
SCHNEIDER CENTER FILTER PROGRAM.pdf
Actually reciprocity failure happens both on long and on very short exposures. However modern films only exhibit issues on the short end when the exposure is below ~1/5000 second, most even less than that, so you should be fine with a flash unless you’re using really exotic, very high speed flashes.
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