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Canon EF 70-200mm f/2.8L IS II - or - Canon EF 100-400mm f/4.5-5.6L IS II

Started Jan 9, 2016 | Discussions thread
OP Pietro Marchesi Regular Member • Posts: 266
Re: Canon EF 70-200mm f/2.8L IS II - or - Canon EF 100-400mm f/4.5-5.6L IS II

ShortestPath wrote:

I would take that with a grain, actually a sack, of salt. The two lenses are in a similar league regarding image quality, so how could the 70-200 w/2x TC be *still* as good as the bare 100-400? At the long end the 100-400 actually has better MTF than the 70-200 without TC! All that test proves is that you can't judge two lenses just by taking a few handheld shots and eyeballing the results, not even if you are Tony Northrup.

Thanks, I suspected this, using 2X extenders degrades even stellar lenses.

I don't want to knock down the 70-200 (I'd be the last person to do so, I just bought it...), but every lens has its limitations, only you can decide which one is best for your use. For objective IQ comparisons you're better off using tools like the ones on TDP. For reference:

70-200 vs 100-400 MTF comparison at the long end http://www.the-digital-picture.com/Reviews/MTF.aspx?Lens=687&FLI=2&API=0&LensComp=972&FLIComp=2&CT=AVG

70-200 w/2x TC vs 100-400: http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=687&Camera=453&Sample=0&FLI=5&API=0&LensComp=972&CameraComp=453&SampleComp=0&FLIComp=4&APIComp=1

Thanks for this, facts are facts.

Both lenses are top performers, but made for different uses.

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Best Regards
Pietro M
Stockholm

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