<p>Hi everybody.</p>
<p>Recently I purchased a 2nd hand Phase One P25 digital back, which I mounted on my Hasselblad H1.<br>
Pictures are soo good.<br>
However, today I went to the studio and I meassured, as always, with my light meter, so I used this values on the camera and I saw a surprise.<br>
Pictures were dark when I opened them in Lightroom.<br>
How dark? well, arround 1 stop, could be a little bit less and no more than 1.5 stops.<br>
Inmediatly I suspected from the digital back, as long as it has more than 100 000 pictures taken before.<br>
Until now, it is an external value taken with a light meter, the F number I used. So it is 1 stop darker.<br>
Does anybody who owns this digital back has faced this same problem?</p>
<p>So second I thought; "ok, could be some kind of problem with the digital back, lets go back to the film back".<br>
So I took out my Nikon D600, attached a lense and measured an area on the wall with both cameras, at the same ISO, F and speed values.<br>
Values are ISO 100 and f 8. On Nikon I have 1/20 of a second and on the H1 I have 1/6 os a second!<br>
I have used this camera before with film and everything was ok, neves an overexposed picture.<br>
Does anybody has an idea of what could have happened?</p>
