RCicala wrote:
One thing I noted right away: its a rear focus design, so when focusing at near distance its not 300mm any more, maybe 220.
Very disappointing to hear. For the 70-300L to live up to its price tag, it had to be perfect on all counts. The combination of severe focus breathing and missing tripod collar makes me think that this lens can't possibly justify the ridiculous price --- even if the optics and AF where phenomenal.
I will say, though, that your samples demonstrate that the 70-300L @ 300mm looks way, way better than the consumer grade 70-300 IS. Not just in terms of sharpness, but also with regards to chromatic aberration. CA appears almost nonexistent on the 70-300L.