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 ...
I make many product photos for the company I work for. For this I use Canon 400D with two external flash devices Walimex CY-600K. I've noticed an interesting effect on many of the photos I take with ...