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  1. #1
    Super Moderator Kayaker72's Avatar
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    On the long end...

    Name:  RF 200-800 comparison.jpg
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    So, I know Canon changed their MTF process a few years ago, given that these do not have f/8, as the old MTFs did and they were taken directly off Canon-Japan's website, I think they are current. But, I am surprised that the 100-400 II the blue line at 400 mm (30 lp/mm) is higher than the 100-500.
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Name:	mtf 100-400 II.jpg 
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    Last edited by Kayaker72; 11-04-2023 at 05:09 PM.

  2. #2
    Super Moderator Kayaker72's Avatar
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    Just running a quick test and this squirrel was nice enough to model.

    My 100-400 II w/2xtc. So, 800 mm f/11. The MTF of the 200-800 at 800 is better than the 100-500 w1.4xtc at 700 mm, I would expect the 200-800 to be even sharper with 2/3 stop light advantage over this setup (see 800 f/11 vs 700 f/10).

    Overcast day...hidden under a few leaves, but 1/640, f/11, ISO 12800 adjusted +1.1 EV, shadows +49, Whites +46 with AI Noise reduction in LR.

    TDP--4 by kayaker72, on Flickr


    AF was slow, but I very much suspect that is 2xtc/EF mount as every review I have seen talked about how AF was as fast as f/2.8 lenses.

  3. #3
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    That looks really good to me!

  4. #4
    Super Moderator Kayaker72's Avatar
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    And finally...if anyone is discounting the RFs 10-18

    Name:  spec-mtf RFs 10-18.jpg
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    vs the EFm 11-22

    Name:  mtf EFm 11-22.jpg
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    Not a bad little lens, especially for the money. 7 aperture blades. That is one of my issues with the less expensive lenses, but you aren't buying that lens for pretty bokeh.

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