User Tag List

Thanks useful information Thanks useful information:  0
Results 1 to 5 of 5

Thread: Help. What would be causing this?

  1. #1
    Ausphotography Regular
    Join Date
    14 Sep 2008
    Location
    Salamander Bay NSW
    Posts
    737
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Help. What would be causing this?

    I have got a lot of colour fringing with my Nikon 70-300 mm lens today, EXIF is 1/320s @ f/5.6, focal length 300 mm, ISO 500 (to get a faster shuuter speed?) I haven't had this problem before, is it to do with the ISO?
    Attached Images Attached Images
    Margaret

    Nikon D7100 Manfrotto MF 055XPROB Pro Tripod & gynbal head, Nikon 18-70 mm, Sigma 10-20 mm, Kenko tubes, Nikkor 80-300 mm VR, Sigma 180 mm macro, Sigma 120-400 mm OS lenses, SB600 Speedlight, Photoshop CS5 on a Mac, Caapture One 7, Lightroom 4 Critiques welcomed


  2. #2
    Member
    Join Date
    25 Nov 2008
    Location
    Sydney
    Posts
    97
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I would say a combination of ISO and speed.
    Site: DzR Photography
    Flickr: Flickr

    Camera: Sony A350 DSLR
    Lenses: 18-70mm, 55-200mm, 50mm f1.4, 70-300G, Minolta 35-70mm f4, Tamron 17-50 2.8
    Flash: Sony HVLF42AM
    Tripod: 190xPROB, 488RC4
    Memory: Sandisk Extreme 200x CF
    Software: Adobe Photoshop CS3 + RAW

  3. #3
    Amor fati!
    Join Date
    28 Jun 2007
    Location
    St Helens Park
    Posts
    7,275
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    is it the af-d or af-s version of the lens? CA can be reduced with good coatings on lens glass. if lens coatings arent up to scratch then you get CA.

    http://en.wikipedia.org/wiki/Chromatic_aberration

    some astronomers use a minus violet filter to remove this, but i dont know what to do with a photographic lens.

  4. #4
    Ausphotography Regular
    Threadstarter

    Join Date
    14 Sep 2008
    Location
    Salamander Bay NSW
    Posts
    737
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    David it is the AF 70-300 1:4-5.6 G, plastic model, I suspect I made a boo boo on buying this lens, didn't know much about them until I started to look at images on AP and the lenses they are taken with, I find it pretty soft too, than G for Photoshop! Margaret

  5. #5
    Member
    Join Date
    02 Apr 2009
    Location
    Brisbane
    Posts
    178
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    What you can do is, in PS open HSL and drop the magenta, and similar colours, back to desaturate. If it wipes out other parts of you photo that you don't want messed with just apply a mask, invert and brush the areas you want fixed.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •