Defish Samyang 7.5mm..Fisheye-Hemi vs LR5

Discussion in 'Image Processing' started by Dave in Wales, May 30, 2015.

  1. Dave in Wales

    Dave in Wales Mu-43 All-Pro

    Nov 5, 2011
    West Wales
    I saw on this forum a suggestion that the LR5 lens correction for the Sigma 8mm could be used to defish the 7.5mm Samyang

    Below are the results using LR5 vs the Fisheye-Hemi plug-in....very interesting.

    Original FE Shot.
    18285097401_672ec2fa1a_c.jpg 11477336673_dc664e1bdb_c by Dave in Wales, on Flickr

    Defished using Fisheye-Hemi
    18396886682_fa93573dac_b.jpg 11477216464_de6b6c81bb_c by Dave in Wales, on Flickr

    Defished using LR Sigma 8mm.
    View attachment 422903 11477336673_dc664e1bdb_c-1 by Dave in Wales, on Flickr
     
    Last edited: Jun 2, 2015
    • Like Like x 1
  2. dwig

    dwig Mu-43 Top Veteran

    636
    Jun 26, 2010
    Key West FL
    Your Lr version is from a different original.

    Here's your posted "original" corrected in Lr5 using the Nikon AF-Fisheye 16mm f/2.8 correction profile along with some slight additional correction and the cropping necessary to remove empty areas at the center top and center bottom while maintaining the 4:3 aspect ratio. It could be slightly wider if I let the aspect ratio change. 11477336673_dc664e1bdb_c-edit.jpg
     
  3. BeyondTheLines

    BeyondTheLines Mu-43 Veteran

    273
    Sep 23, 2012
    Spain/USA
    Patrick
    I went to Flickr to see if there were larger versions of these pics for better viewing but it says they're private...
     
  4. pellicle

    pellicle Mu-43 All-Pro

    Feb 10, 2010
    Southport, OzTrailEYa
    pellicle
    Try PTLens
     
  5. tkbslc

    tkbslc Mu-43 Hall of Famer

    If you share the original, I can run a few comparisons via hugin (freeware) which is what I use for samyang defish
     
  6. budeny

    budeny Mu-43 All-Pro

    Mar 4, 2014
    Boulder, CO
  7. SojiOkita

    SojiOkita Mu-43 Top Veteran

    627
    Feb 23, 2014
    France
    There are user profiles available for the Samyang 7.5 mm:
    http://www.dpreview.com/forums/post/40689446

    I think they are better than using Sigma 8 mm.
    The best thing is that you can use other projections than rectilinear: stereographic is very very interesting.

    In fact, the stereographic projetction is the reason I like my Samyang 7.5 mm so much.