I don't use them, I haven't seen where it could be effecting image quality, but it might be. For me it makes the cameras way too big. I'll probably try them out more in the future. The other day I had a harsh flare coming in on a 16-35 lens, it took about 20 seconds to figure out how to hold my hand to the side of the lens without getting it in the picture as a blocker for the harsh highlight, not sure if any less harsh flare saturated the contrast of the image at all, or beyond what couldn't easily be tweaked in editing. If I had the hood with me, it would have made for a good test.