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Canon 70-200 f/4 L IS with 1.4x or Canon 70-300 f/4-5.6 L IS or 300 f/4 L IS over Tamron 70-300 VC?

Started Feb 19, 2015 | Questions thread
OP dheerc New Member • Posts: 17
Re: test pics from all three:

Also, when I look at photozone.de and look at the cropped sensor results between the two Canons and the Tamron, (links below)

http://www.photozone.de/canon-eos/571-canon70300f456islapsc?start=1
http://www.photozone.de/canon-eos/592-tamron70300f456vceosapsc?start=1
http://www.photozone.de/canon-eos/449-canon_70200_4is_50d?start=1
I see that the Tamron is quite close in center sharpness to the 70-300 L. There is practically no noticeable difference at f/8 between the Tamron and the 70-300 L! I am shocked to see that!

At 200, the 70-200 is slightly better wide open and at f/5.6, it is much better than the 70-300L and obviously better than the Tamron as someone pointed out.

With full frame, it seems quite consistent as the cropped-sensor according to photozone.

 dheerc's gear list:dheerc's gear list
Canon EOS 1100D Canon EOS 6D Canon EF 50mm F1.8 II Canon EF 70-300mm f/4-5.6L IS USM Canon EF-S 18-55mm f/3.5-5.6 IS II +4 more
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