Over the last two weekends, I have been using and comparing my A 400/5.6 lens to my FA *200/2.8 using a 1.5XL Converter and a Tamron 2X AF converter. The obvious advantage to the 200 package is mobility. I have that lens with me anyway and the size and weight of converter isn't too much. Also I get to retain AF with the converter and the 200 where the 400mm is a manual focus lens.
I think that the images shot with the 200+Tamron 2X lose some contrast and possibly some edge sharpness (isn't hurting the shots I am taking) compared to the 400. With the 1.5XL I don't see any obvious differences. My dilemma is this - I rarely carry the 400 - has it's own round tubular case with carrying strap. I almost always opt for the 200 and converters. That all fits in my normal carrying case. I haven't found a great need for the 400mm but am a little hesitant to sell it. I could really use a new Quantum QFlash T2 and the money from the 400 would help towards that end. So are there any opinions on the list as to hanging onto this lens vs. selling or any interested parties? Thanks, Bruce
