Blackouts on P25

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

Blackouts on P25

Postby Joris1 » Wed Nov 30, 2005 6:17 pm

While shooting outdoors on the P25/mamiya 645afd tethered to a PowerBook using long exposures the DB suddenly started to send completely black images to the computer, after having worked fine for two hours. Shooting untethered onto a flash card did the same. rebooting the DB did not help, physically removing the back from the camera (and re-attaching) did help - for a few exposures until the problem occured again.

It was -1 outside.

Has anyone had this and has this to do with the cold?
And what if it gets any colder?

I have an important location shoot (albeit in warmer weather) in a few days...
Joris1
 
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Postby Ulf » Wed Nov 30, 2005 6:57 pm

Operating tempratures is specified to 0 - +50C none condensed.
I know of photographers which have put the backs through far worse conditions.

I would recommend you to contact your dealer to do a check up to see where the problem might lay.
Ulf
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Yes, but

Postby Joris1 » Wed Nov 30, 2005 7:18 pm

Tack sa mycka, Ulf.

But does that mean that the reason for the blackouts may be the temperature after all, or do you suppose something else?

And I work in Russia, where it can get -25 during our long winter.
Can you think of any special measures to still be able to take pictures outside, or should I use film?
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Location: Moscow

Postby Ulf » Wed Nov 30, 2005 8:16 pm

As an official representative I have to refer to official spec.
But as I said, there are a lot of users which use the back in far more extreme temperatures, both above and bellow.
I believe it might be other things like shutter, camera communication or maybe a battery power issue, as you know batteries do not really like cold weather
:D
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