Thanks for the linksAlanF said:Rienzphotoz said:Is there a comparison of both lenses (Tammy 150-600 VC & 100-400 L IS) on the same crop sensor camera body (e.g. 60D / 7D / 70D etc)?AlanF said:Finally, the Tammy is much better on FF than crop. The Tammy at 600mm on FF has the same reach as a 100-400mm on a crop, but a far better IQ.
Yes, on dxomark.com
http://www.dxomark.com/Lenses/Compare/Side-by-side/Tamron-SP-150-600mm-F-5-63-Di-VC-USD-Model-A011-Canon-on-Canon-EOS-7D-versus-Canon-EF-100-400mm-F45-56L-IS-USM-on-Canon-EOS-7D___1263_619_598_619
dxo rates the Tammy as better than the 100-400mm on the 7D, but the difference is not as great as on the 5DIII.
The various links are in
http://www.dxomark.com/Reviews/Tamron-150-600mm-f5-6.3-Di-VC-USD-Canon-mount-lens-review-New-contender
To get an idea of the loss of resolution on going from FF to crop with the 10-400mm L see
http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=113&Camera=453&Sample=0&FLI=7&API=0&LensComp=113&CameraComp=736&SampleComp=0&FLIComp=7&APIComp=1
When I got the 5DIII I noted in CR how much better the 100-400 was on it rather than on the 7D.
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