I'd like to have suggestions to prevent color fringing as much as possible; ideally, when taking pictures, i.e., before post-processing. I understand that overexposed images may cause color fringing, ...
I have looked on my new 50mm lens photo (I have Nikon D90) and I see "purple fringing" around the unfocused objects (longitudinal chromatic aberration). What's is going on? Is it common for this lens ...