Of course she knew I couldn't resist the call to fix up this photo. It's an awesome moment that she managed to capture (seriously, she has such a great eye for composition and a great sense of timing), but unfortunately she ended up with so much blue fringing that of course it was the first thing I noticed. And although I have previously sent her my instructions for removing blue fringe, I'm sure she knew that I wouldn't be able to resist doing it myself if she left the original up on Flickr! And so I went to town.
I thought I'd post the process here in case you have blue fringe problems too, and of course, a copy of either Photoshop or Photoshop Elements (I think these methods should work in either).
So here's the original photo:
First, I removed the blue fringe using the following method. I actually did it twice since there were essentially two different hues of blue that needed removal.
(To give credit where credit is due, I learned this technique from this guy.)
1. Zoom in until you can see the blue or purple pixels that you'll want to remove (I usually zoom to at least 300%).
2. Click on the background layer if it's not already selected (e.g., if you just added a curves layer, then it's the curves layer that is still selected, not the background layer.)
3. Duplicate the background layer (Ctr/Command-J).
4. Go to Filter > Blur > Gaussian Blur and use a value of 180.
5. Click the eye icon next to the duplicate layer in the layers palette to hide it for now.
6. Select the eyedropper in the toolbar and set it to sample a 3x3 pixel area.
7. Go to Select > Color Range. Move the cursor over the image window (it turns into an eyedropper) and sample the color in the blue fringe. Adjust the fuzziness slider to 90 in the Color Range dialog.
8. Go to Select > Modify > Expand selection and enter 3 pixels.
9. Go to Select > Feather > and enter 2 pixels.
10. Click the eye icon next to the duplicate layer to make the layer visible and click the layer in the layers palette to make it active.
11. Right-click, choose Blending Options, and then change the Blending Mode to Color (this preserves the underlying detail or luminance values and changes only the color).
12. Click the Add Layer Mask at the bottom of the layers palette (since you have a selection in place, the mask will hide everything except the selection). This is the icon that looks like a grey rectangle with a white circle in the middle.
13. There may still be some blue fringing. If you want to work on it further, make sure the layer mask is selected (click on it in the layers palette so that the black & white rectangle has a border around it), select the brush tool (press B), press D to set the foreground color to white, set the brush opacity to 100% in the options bar at the top, and paint over the blue fringing to clean up any stray color. Make sure you're using the Normal brush at 100%, and not a Dodge brush or something else.
Now it's much better, don't you think?
But I thought it looked a little washed out, so I worked on bringing out some of the green in the trees. I duplicated the background layer and changed the blending mode of this new layer to Color Burn at 38% Opacity, which increased the color contrast. Then I added a Hue/Saturation layer in which I increased the saturation by 20.
And here's the final result.
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