DJC
By far this is not my favorite lens. On a full frame, its very hard to focus when wide open. I have to use live view with MF and then use the cameras zoom function to focus. Tried it on a crop sensor and it was a little better. In low light and manually setting the color temp I do get nice photos but not great photos. I much prefer the 50mm f1.4 for indoor shots on both my ff and crop sensor. This summer I plan to use this lens for Milky Way/Galaxy photos but I have a less expensive Rokinon 14mm f2.8 which is much easier to manually focus. Will hope this works as well.