Tuesday, June 4, 2013
In the first of two articles, we examine the fundamentals of this powerful Photoshop tool
|This Article Features Photo Zoom|
5) Calculations dialog box.
A Good Preview
The possibilities are staggering. Is there anything that can help with the decision-making process? Yes. A good preview. You'll want to have multiple documents of the same image in different color modes (RGB, CMYK, LAB) visible at one time to simultaneously see the blended and the blendee. You may even want to make a side-by-side comparison of the component channels of a single document. To do this, use the Split Channels option in the Channels palette submenu. This command will break a single multichannel document into multiple single-channel documents. (If a file has layers, it must be flattened first to use Split Channels.) While doing this with several documents will quickly fill a screen, having the channels separated makes evaluating their relative merits infinitely easier.
6) Layer Style dialog box.
With so many possibilities, how do you choose one channel as the best candidate to blend with another, and how do you use it? First, identify the channel causing the problem. Then, find the channel with the best contrast in the areas you wish to enhance, at a low opacity, or replace, at 100% opacity. Stronger adjustments require higher opacities. Finally, deal with any unintended side effects.
Look to the Luminosity channel in LAB. Look to the Black plate in CMYK. Look to complementary colors. Complementary colors often contain the best possibilities for increasing contrast—Red and Cyan, Green and Magenta, Yellow and Blue—in highly saturated values.
What are you looking for? Better detail in shadows or highlights, better contrast and a similar tonal distribution. If you change the relative distribution of tones in a channel, you'll create a nonuniform color shift where some colors will shift more dramatically than others.
7) You can use these blend modes with Layer Styles
Part two of this article will appear in the September/October issue of DPP. It will cover controlling the mix with blend modes, enhancing the blend and constraining the effect.
John Paul Caponigro, author of Adobe Photoshop Master Class and the DVD series R/Evolution, is an internationally renowned fine artist, an authority on digital printing, and a respected lecturer and workshop leader. Get access to a wealth of online resources with his free enews Insights at www.johnpaulcaponigro.com.
John Paul Caponigro, author of Adobe Photoshop Master Class and the DVD series R/Evolution, is an internationally renowned fine artist, an authority on digital printing, and a respected lecturer and workshop leader. Get access to a wealth of online resources with his free ennews Insights at www.johnpaulcaponigro.com.
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