Adobe Photoshop CS2 On Demand [Electronic resources] نسخه متنی

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Adobe Photoshop CS2 On Demand [Electronic resources] - نسخه متنی

Andy Anderson; Steve Johnson

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Understanding File Formats



File Formats


Format

Usage

Photoshop

Uses a PSD (Photoshop) format (the default), which saves layers, channels, notes, and color profiles.

BMP

Uses a BMP (Bitmap) format.

CompuServe GIF

Uses a GIF (Graphic Interchange Format) format, which is used for clipart and text for the Web. A format for images on the Web that only use 256 colors. GIF's compress images by selectively disregarding color and repeating simple patterns. It supports transparency and animation.

Photoshop EPS

Uses a EPS (Encapsulated PostScript Format) format, which saves vector information - i.e. paths.

Large Document Format

Uses a PSB (Photoshop) format (for CS and CS2 only), which is used for saving documents up to 300,000 pixels in any dimension; this useful for saving High Dynamic Range images.

JPEG

Uses a JPG or JPEG (Joint Photographers Expert Group) format. A compression method used to reduce the size of image files primarily for the Web.

PCX

Uses a PCX (PC Paintbrush bitmap) format, which is used primarily in PC formats.

Photoshop PDF

Uses a PDF (Portable Document File) format, which creates a file that can be read by anyone who has a PDF reader program (such as Adobe).

Photoshop 2.0

Uses a PSD (Photoshop Document File) format, which is used to strip a file of all layers, an creates a flattened composite image.

Photoshop RAW

Uses a RAW format that is used for saving and transferring files between programs and computer platforms.

PICT File

Uses a PICT format that is used for the Macintosh operating system.

PICT Resource

Uses the PICT Resource format that lets you save the file that can be used as a Mac image resource.

Pixar

Uses the Pixar format for images that are high-end animation, and 3-D rendering programs.

PNG

Uses the PNG (Portable Network Graphic) format. This is used for saving images onto the Web that supports up to 16 million colors and 256 levels of transparency.

PBM

Uses the PBM (Portable Bit Map) format, which supports monochrome bitmaps (1 bit per channel), and is part of a family of bitmap formats supported by most applications.

Scitex CT

Uses the SCT (Continuous Tone) format in high-end Scitex image-rendering computers.

Targa

Uses a Targa format for high-end image editing on the Windows platform.

TIFF

Uses a TIFF or TIF Tagged Image File) format. This can be opened by almost any image-editing or layout program. a common format for printing and saving flat images without losing quality.

Photoshop DCS 1.0 & 2.0

Uses a DCS (Digital Color Separation) format. This is used by press operators to create the plates used in 4-color printing.


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