Do Ilford Multigrade filters fade? I have just found that my #4 though #5 Multigrade filters don't work anymore. I have the mounted set that comes in a plastic case with the translucent top. The set is about six years old. To make a long story short, my prints started looking lousy, it finally dawned on me that my filters were acting funny. I.e. I did not have to increase the exposure when I went to the #4 through #5 filters, and the contrast was not picking up. When I borrowed a new set I saw what had happened. I only tested the high contrast filters, don't believe the other ones were as effected. I keep the filters in my studio, which is only darkened when I print or develop. So, they are exposed to daylight. While I do keep them in the box......Anyhow. Does anybody have any experience with this? How long do filters last - if this is a common occurrence - 2 years? 3 years? Sure would appreciate input on this.(posted 9014 days ago)Many thanks!