Schoolboy error

Snapper

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Joined
Mar 18, 2004
Messages
230
Location
Brighton, En
Format
Med. Format RF
I made a schoolboy error the other day - I shot a roll of film without changing the iso setting from the previous film. Consequently, I've shot a roll of FP4+ (iso125) at iso50, over-exposing by 1.3 stops(?). Trouble is, it was a low-contrast day, very misty, so does 'pulling' the film like this decrease the contrast even further? Is there any hope?

Usually I would dev this at 10 minutes in PMK, so would a time of 10 - (1.5 x1.333) = 8 minutes be a good idea?

I don't mess about with the film's rating, so this is all a bit of a grey area to me.
 
Joined
Mar 17, 2004
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726
Location
Wilmette,Ill
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Multi Format
Snapper,
This is not a terrible situation. I routinely expose FP4 at 64, so you are OK at 50. If the light was as flat as you're saying I would tend to just develop the film for your normal 10 minute time, or maybe cut back a bit to 9 minutes to be safe, and I think you should be close. Good luck!

Richard
 

geraldatwork

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Feb 26, 2004
Messages
413
Location
Hicksville,
Format
35mm RF
You should be fine. If you had a choice it is generally better to over expose film than under. Also you can always add more contrast in printing. I find it is easier to work with a less contrasty negative than one that is shot in bright sun and over developed.
 

photobackpacker

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Mar 21, 2005
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Minnesota
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4x5 Format
You may discover that the negatives are actually more appropriately exposed - especially on a low contrast day. If you shorten you development and find the contrasts are too low, you have the option of selenium intensification which will give you the equivalent of n+1 processing without increasing the size of the grain and it can be done on a single frame.

Some of the greatest discoveries began with mistakes.
 

titrisol

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Aug 2, 2004
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UIO/ RDU / RTM/ POZ / GRU
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You'll find you won;t have much problems with this ",mistake" than if you had left the ISO setting in 400

Just develop properly and you'll get full shadow detail and decent contrast.
 
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