Hi guys I dont know what can be wrong with my zuiko 75/1.8 Today I did an update of the lens from version 1.0 to 1.1 by OLYMPUS Viewer 2. After that my 75 is noisy when AF is working. It worked before the update silently. I checked my camera with other lenses which i have and everything is okay: silent when AF is working. It is normal after the update ?