OMG! I have Hot Spots!
Dang, I took a bunch of Infrared images with my Olympus E-PL1 Full Spectrum and the Olympus MZ 17mm lens and discovered that I have HOT SPOTS in EVERY image I took! Oh the shame… All along I have been saying how good these lenses are for Infrared photography! OK, we all make mistakes. So what I am going to do in the near future is to really investigate this issue and report back to you. BUT for now be aware that this lens does indeed give hot spots in 100% of my Infrared images!