I'm curious if there are any other bird/wildlife photographers who would like to see Sony introduce a new telephoto 100-400 range, f/4 or f/4.5 aperture and internal focus weighing between 3-4 pounds. Am I dreaming. The 400 f2.8 weighs too much for me and for my wallet. As background, my main interest is bird photography. with emphasis on BIF. I switched to Sony about 2 years ago to acquire gear with improved AF and higher shutter speeds. Since acquiring the a1, my keeper rate has increased significantly. Depending on location,species, etc. I shoot with the 70-200 or 2-600 with and without the 1.4 & 2X TC. Recently I evaluated the 100-400 and determined that while it is a great lens, it wouldn't add much to my present lineup.
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