Long exposures on Contax/P25 ?.

Questions, comments and suggestions regarding Phase One P+ series and P series digital camera backs.

Long exposures on Contax/P25 ?.

Postby NNN637481272897670060 » Fri Feb 05, 2021 1:09 pm


Is there any way I can get past the 32 exposure limit on my contax/P25? I would like to do some night photography with exposures of several minutes. If not now, any chance of a firmware fix so this would be possible?
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Last edited by NNN637481272897670060 on Mon Feb 22, 2021 12:03 pm, edited 1 time in total.
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Re: Long exposures on Contax/P25 ?.

Postby Ulf » Fri Feb 05, 2021 4:12 pm

There is a way, but it is not a "nice solution"
It is essentially a way to turn the contax in to a pin-hole solution.
You can find it here:


Just keep in mind that a P25 can't do so much more. You need a P+ series unit to do long exposures.
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