2 Replies Latest reply on Oct 12, 2015 12:41 AM by TFAD1

    Canon 16-35 F4 IS USM Lens Correction Profile for Distortion is Incorrect

    TFAD1

      I am using the Canon 16-35mm F4 IS USM lens on a Canon 5DS.  Camera Raw version is 9.2

       

      The lens is recognized in Camera Raw however the distortion correction does not work and actually makes the distortion worse particularly from 24mm to 35mm

       

      I printed a grid on A1 paper and photographed it at 16mm, 20mm, 24mm, 28mm and 35mm.  A selection of images are included in this post.  The first in each pair of images is straight from the camera, the second (with the suffix 'corrected') as had auto-correction applied.

       

      I shot the same selection of images with the 16-35mm F2.8 which I also have and the distortion correction works fine.  I photograph architecture and interiors and bought the F4 because of apparent better sharpness however the distortion correction is such a problem that I'll have to continue using the F2.8

       

      16-35 Lens Testing_Adobe_Page_10.jpg

       

      16-35 Lens Testing_Adobe_Page_09.jpg

      16-35 Lens Testing_Adobe_Page_08.jpg

      16-35 Lens Testing_Adobe_Page_07.jpg

       

      16-35 Lens Testing_Adobe_Page_06.jpg

      16-35 Lens Testing_Adobe_Page_05.jpg

      16-35 Lens Testing_Adobe_Page_04.jpg

      16-35 Lens Testing_Adobe_Page_03.jpg

      16-35 Lens Testing_Adobe_Page_02.jpg

      16-35 Lens Testing_Adobe_Page_01.jpg