Site Sponsors
Results 1 to 7 of 7

Thread: Green Fringe... Lens or Sensor

  1. #1
    Member
    Join Date
    Mar 2008
    Location
    Pittsburgh, PA & Dublin, Ireland
    Posts
    77
    Post Thanks / Like
    Images
    1

    Green Fringe... Lens or Sensor

    All

    I received a new 23mm f/1.4 lens, mounted it on my X-Pro 1, and grabbed this snap today:



    Examining the birch trees up close resulted in this:



    As you can see, there is a fringe of green running along the edge of the birch tree. Is this an artifact of the sensor?

    Image processed in Capture One Express 7.2.1

  2. #2
    Senior Member Braeside's Avatar
    Join Date
    Jan 2009
    Location
    Fife, Scotland (UK)
    Posts
    1,171
    Post Thanks / Like

    Re: Green Fringe... Lens or Sensor

    Hi Chris, I think it looks like longitudinal CA.
    Mentioned here
    David Anderson

  3. #3
    Member
    Join Date
    Mar 2008
    Location
    Pittsburgh, PA & Dublin, Ireland
    Posts
    77
    Post Thanks / Like
    Images
    1

    Re: Green Fringe... Lens or Sensor

    Quote Originally Posted by Braeside View Post
    Hi Chris, I think it looks like longitudinal CA.
    Mentioned here
    David, thank you. I've never seen it before.

  4. #4
    Senior Member Braeside's Avatar
    Join Date
    Jan 2009
    Location
    Fife, Scotland (UK)
    Posts
    1,171
    Post Thanks / Like

    Re: Green Fringe... Lens or Sensor

    Hi Chris, I have seen this on fast lenses by other manufacturers too, it generally shows on high contrast out of focus edges. Unfortunately no lens design is perfect and aberrations sometimes show up. In general I find the Fujinon lenses very nice.
    David Anderson

  5. #5
    Senior Member
    Join Date
    Dec 2007
    Location
    Little Rock AR
    Posts
    1,927
    Post Thanks / Like
    Images
    4

    Re: Green Fringe... Lens or Sensor

    It should be correctable. C1 I don't believe has a defringe tool so the C1 algorithm may not see and correct it in a raw file. LR and ACR may do a better job with their toolset especially the latest versions.

    Paul

  6. #6
    Member
    Join Date
    Mar 2008
    Location
    Pittsburgh, PA & Dublin, Ireland
    Posts
    77
    Post Thanks / Like
    Images
    1

    Re: Green Fringe... Lens or Sensor

    Paul, I just processed the file with the new version of Lightroom and TA-da, the green fringe is gone!

  7. #7
    Senior Member Braeside's Avatar
    Join Date
    Jan 2009
    Location
    Fife, Scotland (UK)
    Posts
    1,171
    Post Thanks / Like

    Re: Green Fringe... Lens or Sensor

    Good news Chris. Wonder if the OOC JPG would show it or not? I keep meaning to test whether the X-Pro 1 differs from the X-T1 in this respect, and whether the X-T1 Lens Modulation Optimiser option makes a difference. I process raw in Aperture, though I do have older versions of LR and C1 around too.
    David Anderson

Tags for this Thread

Posting Permissions

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