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POTA developer for night photography.

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Marc Leest

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Night photography involves high contrast situations, and hence requires N-2 development techniques to get the right densities.
Being new to POTA developer, I understand this developer is very capable to register high contrast scenes. I intent to use my remaining stock of APX100 film to do some night photography in combinatiion with POTA.
Any considerations in regards to this combo ?

thx, Marc
 

Ian Grant

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Using POTA might be rather drastic and produce very lack lustre results. I've shot night shots on APX100 and processed in Rodinal as per normal lighting with no N-2 reduction. If you want to cut the contrast then cut the normal development time by by up to about 40%.

Ian
 

David A. Goldfarb

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You might take a look at the Perfection XR-1 formula on the unblinkingeye.com page. I was experimenting with it as a speed developer and found I could get about two stops from it with various films, but contrast was lacking for normal scenes. It might be just right for night photography under high contrast lighting.
 
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Marc Leest

Marc Leest

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You might take a look at the Perfection XR-1 formula on the unblinkingeye.com page. I was experimenting with it as a speed developer and found I could get about two stops from it with various films, but contrast was lacking for normal scenes. It might be just right for night photography under high contrast lighting.

Yes... further investigation revealed that the exposure index might go to 4 iso or so for POTA, and keeping the reciprocity failure in mind (using an EI for APX in D76 @64 ) that even measured 10s would end in 22minutes for POTA.
I might abandon the whole idea, because impractical.
thx, Marc
 
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