Shallow Review: Tamron 150-600 f/5-6.3 VC vs 300mm/2.8 II +2xTC III

AlanF said:
Rienzphotoz said:
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.
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)?

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.
Thanks for the links
 
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The Tammy does not come with a case. Wex photographic sent as a freebie a Canon 300EG gadget bag when I bought a 70D from them. This bag fits the Tamron 150-600 perfectly! (Not with the camera attached).

I have posted some photos in the BIRDS IN FLIGHT thread. They were taken by chance as I was carrying the lens and 5DIII on a journey to my lab when I noticed an aerial dog fight. The lens locked on quite quickly to the two very distant birds high in a clear blue sky.
 
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The-digital-picture has now posted the full review
http://www.the-digital-picture.com/Reviews/Tamron-150-600mm-f-5-6.3-Di-VC-USD-Lens.aspx

It has basically what we know from our own discussions, but done rather well. Bryan does suggest that you would do better by using the lens at 500mm and rezzing up to 600mm rather than using it at 600mm directly. The Tammy is indeed really good across the whole frame at 500mm. My conclusions looking at his own data

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=929&Camera=453&Sample=0&FLI=4&API=2&LensComp=929&CameraComp=453&SampleComp=0&FLIComp=5&APIComp=2

is that if you are using just the centre then 600mm is advantageous but if you need the whole frame or are photographing birds in flight where it is difficult to keep them in the centre, 500mm is better, especially as it gives a wider field of view.
 
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AlanF said:

Less than credible review.

He talks about f/4 to blur the background while most often at 600mm f/8 the DoF is barely enough to cover your subject. He boils it down to a mere 1.33 EV difference in luminosity, apparently disregarding the fact that the Canon focuses much faster. No mention at all about keeper rate. He gives very detailed technical info about each picture, except the two in which he compares the Tamron and the Canon.

And I'm saying all of this as a very happy owner of the Tamron. It's an amazing lens, but I can't stand the wilful spread of incorrect and biased information.
 
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