Just an after thought, I happen to realize that I had a VERY cheap variable ND filter on the lens. I have been shooting with the 5D for sometime now and not once have I noticed CA. This has been the first time I opened up ND filter and thought I would give it a shot. I know I won't know for sure until I do a side by side comparison, but thought I would ask if anyone had any thoughts before I perform some extensive test. Could this be the culprit? The ND filter is: http://m.ebay.com/itm/Fotga-77mm-Slim-Fader-ND-Neutral-Density-Filter-ND2-to-ND400-Wide-Adjustable-/261027810137
Thought I would ask, sorry to double post
Thought I would ask, sorry to double post