Todays tip will involve using Lab color space in Adobe's Photoshop CS4. We'll make a curves adjustment layer, tweak the a / b channels, adjust the layer opacity, and BAM! Your photo just got more color than a new 64 pack of Crayola's ! Prepress color management and color manipulation done fast.
Step one, open your image and under "Edit" menu, use the Convert to Profile command, and choose Lab.
Step Two go to Layer, New Adjustment Layer, Curves
Next Select the a channel, click on the curve (straight line) and put a point right at 50,50
Next Select the b channel, click on the curve (straight line) and put a point right at 50,50
Now take the endpoint shown below in the a channel, and drag it over to a point just to the left side of the histogram. In this particular image, the data starts around the 0,30 point.
Step one, open your image and under "Edit" menu, use the Convert to Profile command, and choose Lab.
Step Two go to Layer, New Adjustment Layer, Curves
Next Select the a channel, click on the curve (straight line) and put a point right at 50,50
Next Select the b channel, click on the curve (straight line) and put a point right at 50,50
Now take the endpoint shown below in the a channel, and drag it over to a point just to the left side of the histogram. In this particular image, the data starts around the 0,30 point.
Now take the endpoint shown below in the b channel, and drag it over to a point just to the left side of the histogram. In this particular image, the data starts around the 0,30 point.
Our final step is to adjust the layer opacity. The curve layer adjustment at 100% is a bit too saturated. I'm going to set the opacity to 60% as you can see below. This produces a nice looking colorful image, which should standout from the rest of your digital - image assets. This simple color correction technique takes less then one minute, and you can easily automate the process for a group of photos!
*Tip for advanced users. If you select the midpoints we anchored (50,50), use the arrow keys to subtley offest the points position. In doing this you can add / remove color casts to images. Use the a channel for red / green, b channel for blue / yellow. DAM! Color Retouching isn't that difficult after all.
*Tip for advanced users. If you select the midpoints we anchored (50,50), use the arrow keys to subtley offest the points position. In doing this you can add / remove color casts to images. Use the a channel for red / green, b channel for blue / yellow. DAM! Color Retouching isn't that difficult after all.
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Comments for Using Lab mode in Photoshop to add Saturation to your Digital Image Management & Retouching by Matt Anderson