I use a combination of Ilford HP5 and XP2 film in 35mm. The side of the box says that the max storage temp of XP2 is 20c, and I store all my film in the fridge, which is a lot cooler than 20C, however, if I carry a spare roll of film around with me, as well as the roll in the camera, then this film could be above 20c for over a week.
Is storage of this film at over 20c for over a week likely to cause damage, or do I have to keep it warm for a lot longer than that for a noticeable effect?
Is storage of this film at over 20c for over a week likely to cause damage, or do I have to keep it warm for a lot longer than that for a noticeable effect?