OK, distortion is a little problem with the lens but use it on a Panasonic body and I don't think you would have a problem. All corrections are done in-body by the software. I believe I've said this before but I'm still having problems with a magenta cast within my Panasonic images. When I first develop them, I don't see it at all, it's only when I come back to the images after a couple of days that I see the cast and I rework the images a second time. I've asked it before but I'll ask again, does someone out there suffer from the same problem. It only happens with my Panasonic cameras.