Originally posted by Chako You definitely have some purple fringe on a few of your photos. The worst is your second photo.
Here are a few examples of what I found with my Tamron 70-300mm copy aka the Purple Monster.
Here is a macro shot taken in August of last summer.And I took about 80 photos of various mallards cleaning themselves this past October..and each and every shot turned out like this one. I was not pleased to say the least.
I think I read somewhere that purple fringing is largely the result of over-exposing the whites. That is clearly the case here.
I have not noticed any purple fringing with my zigma 70-200 f2.8 plus 1.4x TC, but have not shot any white birds for a while. I did notice some, plus green CA with my SMC 300mm f4 and 1.7x AF TC, but again it was shooting white (great egret) against a dark background.
CA was due to out of focus and purple fringing was due to over-exposure of whites. Both were removed using the CA tool in PSP X2