Ilford SFX 200 reciprocity characteristics

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dogzbum

dogzbum

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After some severe Googling I am none the wiser...
Anyone want to suggest when to start making allowances for reciprocity?
Start at 1/2sec or 1sec? Double, triple times?
 
David H. Bebbington

David H. Bebbington

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Ilford of course offers film data sheets at
www.ilford.com
Strangely the sheet for SFX200 has no reciprocity-failure chart. Try the one in the data sheet for, say, HP5 Plus.

Regards,

David
 
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