I zoomed from a distance to take this picture. As you can see, the focused area looks normal, but the grass that is out of focus looks kinda weird. I don't know the technical name for such a problem (if there is one).
Can anyone tell if this is normal or something wrong with my lens (because I cleaned it yesterday and I might have done something wrong) ?
I would love some suggestions for online guides covering problems that amateur photographers like myself face.
here is another shot with obvious kind of greenish shifting for some elements in the out of focus area.
i feel this is a lens issue. Any more ideas ?