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| p.10 #5 · p.10 #5 · Tamron announces 150-600mm Ultra-Telephoto Zoom Lens |
I've looked at all the samples and am impressed with the color and lack of chromatic aberration, but I'm not sure that it is as sharp as the canon lenses you're comparing them too (400 DO + converter). I have both the 100-400L and 300 f2.8IS v1 w/ converters. I'd say the lens is as sharp as my 100-400 @ 400mm and my 300 f2.8 w/ a 2x mark iii. I guess that this is impressive when you think about the cost of purchasing my two lenses (both of $4300 used). But, I'm not sure that I'd be willing to give up the infinite backwards/forwards compatibility or build of these lenses in favor of a Tamron. I've had too many alt market telephotos (Tam 300mm f2.8 MF, Tam 300 f2.8 AF, Sigma 300mm f2.8 HSM, 120-300 f2.8 HSM) to know that they are great for a while, but then you begin to discover weaknesses in build, optimal aperture, or inconsistent performance at varied focus distances that have caused me to sell the lenses in favor of an OEM optic.