Varied lighting amongst group photo

Discussion in 'Photoshop' started by Mrs BeebleBrock, Mar 12, 2006.

  1. Hi folks, would someone be kind enough to help me even out some lighting?

    I have a group of eight people in a two-row pose. The left four people
    are next to a window and so they are lighter than the right four. I'm
    sure there is a way to lighten the photo so that only the necessary
    areas are affected, but how?

    Thanks in advance for your advice,
    Mrs BeebleBrock, Mar 12, 2006
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  2. Mrs BeebleBrock

    Wheeler Guest

    if you can retake the picture i would suggest holding up a large piece of
    white paper or similar object to reflect the light back onto the right 4

    if you can't retake the picture try making a gradient mask going from
    transparent on the left to opaque of the right and them try using levels,
    brightness, ect. to fix it
    Wheeler, Mar 12, 2006
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  3. Mrs BeebleBrock

    nb Guest

    Quick and dirty method:

    Copy your photo and save it as something other than the original.
    Work on this copy. Use the lassoo with a wide feathering (try 100 pixels to
    start - you will see if the transition is too dramatic or not) to encircle
    whichever part you want to adjust. Use curves to fiddle with the tones in
    this area and perhaps history brush to adjust sections you overdo. There
    are better methods such as adjustment layers but as I said above quick and

    nb, Mar 12, 2006
  4. Yes, this is exactly what I would like to do. Would you be kind enough
    to explain in a bit more detail what I need to do to achieve a gradient
    Mrs BeebleBrock, Mar 13, 2006
  5. Mrs BeebleBrock

    Hunt Guest

    As stated, the first thing to do is to work on a copy, not the original image.
    Next (and the order can vary), create a mask, by hitting Q. You will have
    nothing shown at this point. Choose Gradient Tool, and select a Linear
    Gradient that goes from denisty to transparency - there is one in the default
    group of Gradients. Click on one side of the image (remember, you are in Quick
    Mask Mode), and, while holding Shift, drag to the other side. In the default
    Gradient, you get density (red) going to transparent at about the ~ 50% mark.
    you can vary this graduation by either dragging to a point less than 100% of
    the image width, or by adjusting the point in the Gradient Options dialog box.
    You now have a Gradient Mask (experiment, as you probably want >50%, or <
    than.) Now, hit Q again, to get the "marching ants" and then choose the
    Adjustment Layer icon at the bottom of the Layers Palette. Here, you can
    choose Levels, or Curves, as you choose, to correct density, and contrast. If
    you have not hit the point right with the mask, you can always go back and re
    -do it. When you have the Curves, or Levels correct, go to Selection, and
    choose Load Curves, or Levels Adjustment Layer Mask. You will get the marching
    ants again, and now click again, on the Adjustment Layer icon. Now, choose
    Color Balance, and tweak the colors.

    You can do the Adjustment Layers, and THEN add the masks, if you wish. When
    changing/adjusting the masks, make sure that the mask's Channel is active, by
    either clicking on the Adustment Layer Mask thumbnail, or by clicking on that
    Channel in the Channel's Palette.

    If, for instance, the graduation of lighting is not near the 50% of the width,
    then use your best guess when doing the mask.

    If this is not clear, don't hesitate to ask for more detail. It takes much
    longer to type this, than it does to actually do it, so do not be put off by
    the length of the text.

    Adjustment Layers are your friend, and their masks are totally marvelous.

    Hunt, Mar 13, 2006
  6. Mrs BeebleBrock

    Wheeler Guest

    click icon to enter quick mask or press keyboard shortcut (q)
    with default colors selected (d) select gradient tool
    select linear gradient mode in the toolbar at the top
    drag a line from right to left
    the redder the area is the less it will be affected
    you may need to adjust how far you draw the line to get the area you want
    click icon to exit quick mask mode or press (q)
    use levels, brightness, ect.
    Wheeler, Mar 13, 2006
  7. Mrs BeebleBrock

    DP_Pro Guest

    I have to say, that is an excellent solution to her problem. One thing
    that must be noted, however, is that in Photoshop there is always more
    than one way to do something correctly. The solution posted is an
    excellent way to vary an adjustment over distance if there is a linear
    brighness error. This technique also works for images taken with
    cheapo cameras where the corners are darker than the center. Using a
    Radial gradient in the center of the image instead of a linear blend
    across the image will make these images easy to correct.

    Another possibility for you might be a trick I use often, (I have a pen
    tool, so this would be more valuable for someone who is using a pen).

    As noted, work on a copy or duplicate of the original... create a
    layer ajustment layer above the image in the layers palette.
    Adjustment layers automatically create a mask when you make them. (Look
    to the right of the adjustment layer icon in the layers palette.. you
    will see a blank white box).

    With layer masks, white in the mask reveals the effect of the layer
    mask, and black will hide the layer mask effect.

    Adjust the layer mask until the area you are trying to fix looks
    proper. Ignore the fact that everything else is going to hell -- just
    pay attention to the problem area and make it look as good as you can
    using the adjustment layer. Once you are happy with the way it looks,
    apply the layer adjustment.

    Now, click on the white adjustment layer mask, and hit Control-I (CMD-I
    (Mac)) to invert the mask. Now, the image will look like it did before
    you put the layer adjuster onto the image. The Adjustment mask icon
    will now be black instead of white.

    Being sure to click on the mask icon, and set your pen tool to be
    white, with a soft edged brush of appropriate size and start painting
    where you want the adjustment to be applied. As you paint on the mask,
    the Layer Adjustment will be applied. The softer the brush, the more
    subtle the effect will be.

    Hope that helps...
    DP_Pro, Mar 13, 2006
  8. Mrs BeebleBrock

    DP_Pro Guest

    Oh, and if you paint on the masking layer with black, instead of white,
    you will hide or diminish the correction effect.... (Left that out of
    my previous post)..

    DP_Pro, Mar 13, 2006
  9. Thanks everyone! I do have a tablet/pen so that makes life a bit easier.
    Mrs BeebleBrock, Mar 15, 2006
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