Adobe Photoshop is a raster graphics editor developed and published by Adobe Systems for Windows and OS X.

Photoshop was created in 1988 by Thomas and John Knoll. Since then, it has become the de facto industry standard in raster graphics editing, such that the terms "photoshopping" and "photoshop contest" were born. It can edit and compose raster images in multiple layers and supports masks, alpha compositing and several color models including RGB, CMYK, Lab color space (with capital L), spot color and duotone. Photoshop has vast support for graphic file formats but also uses its own PSD and PSB file formats which support all the aforementioned features. In addition to raster graphics, it has limited abilities to edit or render text, vector graphics (especially through clipping path), 3D graphics and video. Photoshop's featureset can be expanded by Photoshop plug-ins, programs developed and distributed independently of Photoshop that can run inside it and offer new or enhanced features.

Topics Include

• Using Bridge to batch rename files and add keywords and metadata to photos
• Viewing, rating, filtering, and creating collections to isolate your best work
• Comparing raw and JPEG file formats
• Retouching and automating workflow with Camera Raw
• Navigating documents and the Photoshop interface
• Understanding file formats, resolution, canvas size, and print size
• Cropping, straightening, transforming, warping, scaling, and resizing images
• Selecting, stacking, aligning, and grouping layers
• Making precise selections using the Marquee, Lasso, and Brush tools
• Using Refine Edge, Quick Selection, and layer masks to isolate soft edge objects
• Improving tone, contrast, and color selectively
• Converting to black and white and tinting images
• Retouching blemishes, smoothing skin, whitening teeth, and brightening eyes
• Retouching with the Liquify, Content-Aware Fill, Healing Brush, and Patch tools
• Merging multiple exposures
• Making nondestructive changes with Smart Filters
• Adding texture, edge effects, and drop shadows with blend modes
• Working with type
• Creating, modifying, and combining shapes using the Shape tools
• Adding layer effects
• Saving and sharing images via contact sheets, web galleries, and Save For Web
• Editing video and audio clips
• Panning and zooming still photos

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