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A Glossary of Photoshop Terms - "C" - Continued

written by: Joli Ballew•edited by: Daniel P. McGoldrick•updated: 2/24/2009

Photoshop terms that begin with the letter C. Find out about color tables, convert point tool, corner crop marks, and more.

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    <this is a continuation of terms for C from the previous article in this series.>

    Color models: Established models for creating and reproducing color. There are many color models, including RGB, CMYK, HSB, indexed, and more. As a screen printer, you’ll mainly be concerned with RGB and CMYK color modes, although indexed color can be useful as well, depending on your needs.

    Color palette: Displays information on the current foreground and background colors and allows you to change the colors as desired and/or base the colors on different color models.

    Color Sampler: Like the Eyedropper tool, this allows you to match a color exactly by clicking on an area of the image and then offers information about that color. The Color Sampler tool is located with the Eyedropper in the options bar. This tool lets you take a snapshot of up to four color samples in an image and lists them in the Info palette. This is useful when you need to compare one color to another or when you need to see the changes in colors after applying image transformations.

    Color Table: When selecting indexed colors, the Color Table allows you to select custom indexed colors for separations.

    Commit: The check mark on the options bar that is used to accept a recently made change to an image.

    Contiguous: Used with tools such as the Magic Eraser, the Paint Bucket, and the Magic Wand to specify how colors will be selected, applied, or erased. When Contiguous is checked, the resulting selection only includes pixels that are adjacent to each other. Otherwise, all pixels of the preferred color are selected.

    Convert Point tool: A hidden tool in the Pen tools section of the toolbox, it can be used to change a smooth point, like that on a curve, to a corner point, like that on a rectangle or square. Clicking and dragging with the tool achieves this.

    Copy: Copies the selection and leaves the image on the original file or image, while at the same time placing it on the clipboard for later use with the Paste commands. Copying a selection, a layer, or text allows you to quickly place the information in another file or the same one without having to recreate it.

    Copy Merged: This command makes a merged copy of the visible layers in an image or selected area and places it on the clipboard. This command allows you to copy multiple layers at once.

    Contact sheet: A sheet that contains thumbnails of images. Contact sheets can be used to catalog images on your computer, in your digital library, for your library of logos and designs, or to offer choices for different photos or logos to clients. You can automatically create a contact sheet using the File>Automate>Contact Sheet II command.

    Corner crop marks: Print marks where the image should be trimmed. These marks can also be useful if you are printing out an image for a demonstration using a slide projector, package design work, or any other type of work that requires CMYK printouts to be aligned exactly.

    Crop tool: The Crop tool lets you remove extraneous portions of an image or file by selecting a specific portion of the image and deleting the area outside of it.

    Curves tool: Allows you to control your color changes precisely and from the entire tonal spectrum. The Curves tool also allows you to preview changes as you make them, as well as view the changes to the ink values in the Info palette at the same time.

    Custom shapes: Vector-based clip art that comes with Photoshop that is available from the toolbox under Shapes. Choose the custom shape from the pop-up palette in the options bar.

    Cut: A command that is used in many software programs to remove a selection from the file. You can cut text, layers, and manual selections and thus remove them completely from the image. Cutting places the deleted selection onto the clipboard, where it can then be pasted into the same image or another one.