CS5 Gradient Banding...HELP!

Discussion in 'Photography Beginners' Forum' started by Ryan L, Feb 4, 2012.

  1. Ryan L

    Ryan L TPF Noob!

    Joined:
    Apr 20, 2010
    Messages:
    1,321
    Likes Received:
    89
    Location:
    Shelbyville, MI
    Can others edit my Photos:
    Photos OK to edit
    Hoping someone might know a fix. I am applying a gradient to a mask and I can't get the banding to go away. Its driving me crazy! When searching for a solution all I find is to check dither...doesnt work, I tried applying a gaussian blur, but since its a mask it doesnt affect it. Anyone have any ideas?

    [​IMG]


     
  2. flameshots

    flameshots No longer a newbie, moving up!

    Joined:
    Dec 20, 2009
    Messages:
    363
    Likes Received:
    31
    Location:
    Atlanta, GA
    Can others edit my Photos:
    Photos OK to edit
    First off I am NOT an expert by any stretch of the imagination but the first thing I thought of was to "refine edge" on the mask before aplying the gradient.
     
  3. Buckster

    Buckster In memoriam

    Joined:
    Sep 14, 2009
    Messages:
    6,399
    Likes Received:
    2,335
    Location:
    Way up North in Michigan
    Can others edit my Photos:
    Photos NOT OK to edit
  4. KmH

    KmH In memoriam Supporting Member

    Joined:
    Apr 9, 2009
    Messages:
    41,401
    Likes Received:
    5,696
    Location:
    Iowa
    Can others edit my Photos:
    Photos OK to edit
    Add some noise.
     
    • Like Like x 1
  5. Ryan L

    Ryan L TPF Noob!

    Joined:
    Apr 20, 2010
    Messages:
    1,321
    Likes Received:
    89
    Location:
    Shelbyville, MI
    Can others edit my Photos:
    Photos OK to edit
  6. Ryan L

    Ryan L TPF Noob!

    Joined:
    Apr 20, 2010
    Messages:
    1,321
    Likes Received:
    89
    Location:
    Shelbyville, MI
    Can others edit my Photos:
    Photos OK to edit

    I know that will work, but its supposed to look like a gloss floor. Oh how I wish Adobe would fix their banding issue! Oh well I just eliminated the gradient altogether.
     
  7. Ryan L

    Ryan L TPF Noob!

    Joined:
    Apr 20, 2010
    Messages:
    1,321
    Likes Received:
    89
    Location:
    Shelbyville, MI
    Can others edit my Photos:
    Photos OK to edit
    ...but its a big rectangle that I selected with the marquee tool...I think its refined just right. If you saw the whole picture I think it would make more sense.
     
  8. KmH

    KmH In memoriam Supporting Member

    Joined:
    Apr 9, 2009
    Messages:
    41,401
    Likes Received:
    5,696
    Location:
    Iowa
    Can others edit my Photos:
    Photos OK to edit
    How is it Adobe's issue?
     
  9. Buckster

    Buckster In memoriam

    Joined:
    Sep 14, 2009
    Messages:
    6,399
    Likes Received:
    2,335
    Location:
    Way up North in Michigan
    Can others edit my Photos:
    Photos NOT OK to edit
    Sorry, I missed that. It would help a lot if we could see the image and get a little more info on what you're trying to achieve.

    I just played a little to see what I might be able to come up with, and one thing I noticed is that the green channel seems to be the very worst when it comes to banding issues. When amounts of green are mixed in with the other two channels in a gradient, it "pollutes" the area and bands occur almost every time. When I made pure gradients of 255 blue to 1 blue (effectively black), and the red and green at 0, banding couldn't be seen, unless I was only looking at the blue channel, just to see what was there. In RGB mode, all was well. Same when I did it with red at 255 and blue and green both at 0. Even with red and blue both at 255, as long as green was at 0, things looked pretty good.

    I found that interesting.
     
  10. Ryan L

    Ryan L TPF Noob!

    Joined:
    Apr 20, 2010
    Messages:
    1,321
    Likes Received:
    89
    Location:
    Shelbyville, MI
    Can others edit my Photos:
    Photos OK to edit
    While it may not actually be Adobes issue, they provide a product that is used for editing. If they can make a feature to deblur a photogs screw up, they can find a algorithm to make a smooth gradient I think.
     
  11. Ryan L

    Ryan L TPF Noob!

    Joined:
    Apr 20, 2010
    Messages:
    1,321
    Likes Received:
    89
    Location:
    Shelbyville, MI
    Can others edit my Photos:
    Photos OK to edit
    The part of the image is posted up top that I am having the banding in. I am making a gloss floor beneath a team photo, with a reflection. I am trying to bring a gradient from black to tranparent to imitate light fall off just behind the team, to the bottom of the image. I even tried this at 32 bit and still have banding. I am at a loss. Maybe I will play around with adding another color to the gradient so see if that smooths it out a little.
     
  12. Buckster

    Buckster In memoriam

    Joined:
    Sep 14, 2009
    Messages:
    6,399
    Likes Received:
    2,335
    Location:
    Way up North in Michigan
    Can others edit my Photos:
    Photos NOT OK to edit


    Suck all the green out of it and see if that helps.
     

Share This Page