I have the objective now are about a year and am annoyed regularly on the strong vulnerability to light reflections, macules, lensflares or whatever one says. use is mainly architecture inside and out. interior shots with the lights are unfortunately no light spots not possible because always light somewhere on the ceiling or wall hanging! very annoying and I knew this in advance not by my other objective. also for landscapes succeed spot-free images with the sun behind, or 90 degrees to her. I like the light "games", which is a serious drawback for me, that is in accordance with amazon star rating, 2 stars = I do not like. otherwise with respect to processing, image quality and distortion I would give it 5 stars. the angle of view is awesome and you can just prune accordingly when architectural photography and avoid shift without converging lines!