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Photoshop Top 40, Feature #6: RGB, CMYK, and Lab
Photoshop more than supports many color spaces; it supports infinite variations on the device-dependent ones. You can open an RGB photo, process it in Lab, and output it to CMYK, with certainty that each conversion will work.
Photoshop Top 40, Feature #8: The Eyedropper
The ubiquitous eyedropper is simple in purpose and easy to use. But imagine a world without it, where you had to dial in every one of the 16.8 million+ colors manually. The eyedropper is Photoshop
Photoshop Top 40, Feature #9: Levels
The Levels command, and its cohort the histogram, let you adjust luminance levels on a channel-by-channel basis. The upshot is that you can increase contrast, correct for color cast, and make a bad image good.
Photoshop Top 40, Feature #10: Color Settings
The Color Settings command is your way of establishing reliable color management policies across the entire Creative Suite. While admittedly techy, it ensures that what you see is what everyone else sees as well.
Photoshop Top 40, Feature #16: Adjustment Layers
An adjustment layer is an independent layer of color adjustment that you can edit any time you like. Plus it affects all layers below it, consumes very little space in memory, and affords the opportunity for selective edits.
Photoshop Top 40, Feature #28: Hue/Saturation
Hue/Saturation not only spins colors and intensity values, it lets you modify one color independently of all others. And it does so in such a credible way, you would never know it was there. Perfection.
Photoshop and the Lost Undersea Channel
Underwater photos often lack a Red channel -- which is where things like coral, clown fish and our skin tones hang out. Fortunately, Deke knows how to summon Red from the watery depths and make your photos come alive.
Don't Fear the Lab Mode
Digital cameras are wonderful, but they're ultimately machines. You, on the other hand, are a superior human being. Celebrate your humanity in the Lab mode, where you can take the work of machines and make it way better.
Stealth 'Shop, The Virgin Histogram
Have an image that needs an absolute color overhaul? This video shows you how to apply some shockingly massive edits, get great results, and clean up the histogram so it looks like you never set foot in Photoshop.