| It depends. Sometimes it's OK, sometimes it isn't.
I often find a difference of a 1/4 stop in speed and a 1/4 grade in contrast between boxes of the same paper. Matching emulsion numbers aren't a guarantee of a match.
Paper will loose speed and contrast and gain fog with time. The more the box is opened it seems the faster the paper ages - at a guess it might be oxygen related. What may have started as matching boxes slowly diverge with time.
Some East-European papers have a 0.5 stop of sheet-sheet variation in paper speed within the same packet. |