Results 1 to 7 of 7

Thread: Dancing green lights?

  1. #1
    Member
    Join Date
    Sep 2005
    Location
    New York, Singapore
    Posts
    1,513

    Question Dancing green lights?



    Hi all,

    Does anyone know why there are green lights?

    I suspect its an internal reflection thing between my lens and the filter..Could this be the cause?

    Should i take out the filter when taking such shots in future, or for low-light photography with strong light spots?

    thanks!
    ((=

  2. #2
    Senior Member
    Join Date
    Apr 2005
    Location
    270 degree of Singapore
    Posts
    6,741

    Default Re: Dancing green lights?

    most likely is the filter reflect the light back to sensor. You can try by either remove the filter, or buy those slightly more expensive "coated" filter, which will not face such problem.
    Sony Alpha 700 hobbyist

  3. #3
    Moderator ortega's Avatar
    Join Date
    Nov 2004
    Location
    Singapore, Singapore, Singapor
    Posts
    23,686
    Blog Entries
    7

    Default Re: Dancing green lights?

    green orbs, SPI has seen a few of these

  4. #4
    Member
    Join Date
    Sep 2005
    Location
    New York, Singapore
    Posts
    1,513

    Default Re: Dancing green lights?

    thanks...guess its time to get a better filter then! otherwise i'll simply forget to take out the filter again next time...

    these spots are a pain to get rid of with PS...

  5. #5
    Member
    Join Date
    Dec 2005
    Location
    西乐园
    Posts
    177

    Default Re: Dancing green lights?

    Quote Originally Posted by antacid
    thanks...guess its time to get a better filter then! otherwise i'll simply forget to take out the filter again next time...

    these spots are a pain to get rid of with PS...
    what filter are you using?

  6. #6
    Member
    Join Date
    Oct 2005
    Location
    Bt. Timah
    Posts
    1,354

    Default Re: Dancing green lights?

    Yup its the filter. My guess is that he's using one of those inexpensive Hoya UV guards or equivalent. Always causes this problem.

    Its quite easy to remove them in photoshop. The blobs only appear on the green channel, so use info from either the blue or red channel to repair, then touch up with clone stamp.

    Unless you do night photography often or are using an expensive L lens, don't bother buying an expensive filter. The problem is isloted to scenes like this. Just remove the filter when u see bright sources of light at night.

  7. #7
    Senior Member +evenstar's Avatar
    Join Date
    Jan 2004
    Location
    Singapore / United Kingdom
    Posts
    5,655

    Default Re: Dancing green lights?

    Quote Originally Posted by solarii
    Unless you do night photography often or are using an expensive L lens, don't bother buying an expensive filter.
    Don't bother about buying cheap filters even if you use L lenses. Either you buy good filters, or don't buy any at all.
    eat. drink. shoot

Bookmarks

Posting Permissions

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