Krob97-my photo with the onion effect was not adjusted in photoshop or lightroom either. I don't mind the lemon effect as my 85mm has some of this as well. It is more that central target in the middle of the onion that I will have to decide if I can accept or not. My onion effect looks much more prominent than the other pictures I have seen. Other than this the lens looks great with only some mild softness at the edges till close to 2.8. Since I will be using it wide open much of the time that does not bother me.Gotcha! I don't mind the lemon effect either... all in all, there's nothing terrible here. Most folks looking at our images never seem to notice any of the slight defects that we the photogs seem to pick up instantaneously..
Seems like we can fret and fret over little abnormalities and oddities in our images and they can walk up behind you and say; "oh that's awesome!", "I love that shot". It's kind of crazy! My customers often seem to most like the photos that I like the least!