Adobe Lens Profiles for some legacy glass

Discussion in 'Image Processing' started by addieleman, Jan 1, 2014.

  1. addieleman

    addieleman Passionate amateur

    Nov 13, 2012
    Real Name:
    Ad Dieleman
    Made lens profiles for some of my legacy glass used on the A7. You can download them from my SkyDrive folder and on a Windows machine you have to place them in
    The profiles only supply correction for geometric distortion, vignetting and CA are not corrected. With the profiling procedure I used, vignetting profiling resulted in considerable over-correction.

    No need to read this paragraph if you just want to use the profiles, but if you want to make profiles yourself, displaying a test chart on an LCD (TV!) screen is an alternative for printing the calibration charts supplied with the free Adobe Lens Profile Creator program. I didn't want to spend money on printing a large chart, so I wrote a little program to generate a JPEG file with a test chart and I displayed that on my home TV. However, I guess using a screen is the reason that vignetting correction doesn't turn out well, probably because of brightness variation of the screen with viewing angle. Anyway, if someone wants a JPEG correction chart with certain dimensions, just ask and I'll run my program again. I've uploaded 1 sample already in HD size (1920x1080 px, 49x27 fields).

    Finally a demo to show off how well this works!

    The worst offender, the Minolta MD W.Rokkor 20mm 1:2.8

    And corrected!
    • Like Like x 9
  2. quezra

    quezra TalkEmount Top Veteran

    Aug 22, 2012
    Gah, you might make me want to go back to Adobe :( I miss spot heal already and now this... :((((
  3. -et-

    -et- TalkEmount Veteran

    Jan 26, 2013
    Southern California
    Real Name:
    Many thanks.

    I have not used it yet, but I downloaded the profile for the MD W.Rokkor 20mm f:2.8, and expect to find it quite useful.

    - Tom -
  4. ChangshaNotes

    ChangshaNotes Super Moderator

    Aug 15, 2012
    Real Name:
    Thanks for sharing Ad.
  5. Snowy

    Snowy TalkEmount Veteran

    Nov 18, 2013
    Melbourne, Australia
    Real Name:
    Thanks very much Ad. That could be useful once my MD 24 f2.8 arrives.
  6. Amamba

    Amamba TalkEmount All-Pro

    Apr 13, 2013
    SE MI
    Thanks a lot for sharing ! A stupid question... The profile is not sensor specific, it's only based on the optics of the lens, right ?

    Sent from my Nexus 7 using Tapatalk
  7. addieleman

    addieleman Passionate amateur

    Nov 13, 2012
    Real Name:
    Ad Dieleman
    I don't know how the profile works exactly. When making the profile the camera name was added to the default file name for the profile, so I guess the profile is also camera-specific. In an earlier LR version (5.3 RC) the lens profiles for e.g. the SEL-1018 didn't work for the A7 and now they do (5.3), so that enhances my presumption that the profile is camera specific. I didn't try to modify or hack the profiles to make it useable for e.g. the A7R. I also don't know if the profile is useable for APS-C files; I think it should be possible because LR should be able to work with part of an image and it should be able to use the profile data for it.