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  1. #1
    Senior Member neuroanatomist's Avatar
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    Canon has gotten so good that lens design that the RF 14-35 f/4 is not anywhere near rectilinear as it hits the sensor, but Canon is fixing the distortion automatically and baking it into the "RAW" files. But, we get a 14 mm wide lens that accepts front mounted filters that is also small, light and superb IQ.
    The RF 24-240mm and RF 16/2.8 also ‘force’ corrections, although they’re only forced on RAW files if you use DPP. I found that with RF 14-35mm files converted in DxO PhotoLab, I’m actually getting the FoV of ~13.5mm at the wide end.

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    Quote Originally Posted by neuroanatomist View Post
    The RF 24-240mm and RF 16/2.8 also ‘force’ corrections, although they’re only forced on RAW files if you use DPP. I found that with RF 14-35mm files converted in DxO PhotoLab, I’m actually getting the FoV of ~13.5mm at the wide end.
    Checking that it is actually 13.5mm FOV is very meticulous.

    What would you get if you used DPP?

  3. #3
    Senior Member neuroanatomist's Avatar
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    DPP gives very slightly narrower than 14mm (a few pixels), Adobe gives very slightly wider than 14mm. The differences are really only noticeable with DxO. I used the EF 11-24/4L for comparison. FYI, I am referring to the distortion-corrected FoV, the uncorrected image has an FoV of a bit wider than 13mm.

    Full details here: https://www.canonrumors.com/forum/th...testing.41022/
    Last edited by neuroanatomist; 12-30-2021 at 04:07 PM.

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