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Photoshop

by : admin on 10-Aug-16

Adobe Photoshop is one of the most powerful software applications for image editing, touch up, color correction, and painting and drawing. You can use it to work with images that have been digitized on flatbed or film/slide scanners, or to create original artwork. The image files you
create in Photoshop can be printed to paper or optimized for use in multimedia presentations, web pages, or animation/video projects.

Toolbox
• Contains selection tools, painting and editing tools, foreground and background
color selection boxes, and viewing tools
• To select, simply click on the icon on the toolbox (the name of each tool will
appear by positioning the pointer over the icon)
• A small triangle at the bottom corner of the icon indicates the presence of
additional hidden tools
Common Palettes
-Color-
-Swatches-
-Layers-
-History-
Palettes
• Control behavior of its tools
• Windows menu displays a list of available palettes
• When selected, the palette will appear as a floating
window on the opened workspace
• To activate a palette click on its tab
Color
• Displays the color values for the currently selected
foreground and background colors

Swatches
• Displays a generic set of
colors, but the true value of the Swatches palette is in
its ability to load custom swatch collections
Layers
• Displays all the layers in an image

History
• Records and displays
individual changes made to
an image and allows for
changes to be undone

File format

Photoshop files have default file extension as .PSD, which stands for “Photoshop Document.” A PSD file stores an image with support for most imaging options available in Photoshop. These include layers with masks, color spaces, ICC profiles, CMYK Mode (used for commercial printing), transparency, text, alpha channels and spot colors, clipping paths, and duotone settings. This is in contrast to many other file formats (e.g. .JPG or .GIF) that restrict content to provide streamlined, predictable functionality. A PSD file has a maximum height and width of 30,000 pixels, and a length limit of 2 Gigabytes.
Photoshop files sometimes have the file extension .PSB, which stands for “Photoshop Big” (also known as “large document format”). A PSB file extends the PSD file format, increasing the maximum height and width to 300,000 pixels and the length limit to around 4 Exabytes. The dimension limit was apparently chosen arbitrarily by Adobe, not based on computer arithmetic constraints (it is not close to a power of two, as is 30,000) but for ease of software testing. PSD and PSB formats are documented.[11]
Because of Photoshop’s popularity, PSD files are widely used and supported to some extent by most competing software. The .PSD file format can be exported to and from Adobe’s other apps like Adobe Illustrator, Adobe Premiere Pro, and After Effects, to make professional standard DVDs and provide non-linear editing and special effects services, such as backgrounds, textures, and so on, for television, film, and the web. Photoshop’s primary strength is as a pixel-based image editor, unlike vector-based image editors. Photoshop also enables vector graphics editing through its Paths, Pen tools, Shape tools, Shape Layers, Type tools, Import command, and Smart Object functions. These tools and commands are convenient to combine pixel-based and vector-based images in one Photoshop document, because it may not be necessary to use more than one program. To create very complex vector graphics with numerous shapes and colors, it may be easier to use software that was created primarily for that purpose, such as Adobe Illustrator or CorelDRAW. Photoshop’s non-destructive Smart Objects can also import complex vector shapes.
Language availabilities

Photoshop is available in the following languages:
Brazilian Portuguese, Chinese Simplified, Chinese Traditional, Czech, Danish, Dutch, English, Finnish, French, German, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Romanian, Russian, Spanish, Swedish, Turkish and Ukrainian. Also Arabic and Hebrew as of Photoshop CS6.

Plugins

Main article: Photoshop plugin
Photoshop functionality can be extended by add-on programs called Photoshop plugins (or plug-ins). Adobe creates some plugins, such as Adobe Camera Raw, but third-party companies develop most plugins, according to Adobe’s specifications. Some are free and some are commercial software. Most plugins work with only Photoshop or Photoshop-compatible hosts, but a few can also be run as standalone applications.
There are various types of plugins, such as filter, export, import, selection, and automation. The most popular plugins are the filter plugins (also known as a 8bf plugins), available under the Filter menu in Photoshop. Filter plugins can either modify the current image or create content. Below are some popular types of plugins, and some well-known companies associated with them:
Color correction plugins (Alien Skin Software,[13] Nik Software,[14] OnOne Software,[15] Topaz Labs Software,[16] The Plugin Site,[17] etc.)
Special effects plugins (Alien Skin Software, Auto FX Software,[18] AV Bros.,[19] Flaming Pear Software,[20] etc.)
3D effects plugins (Andromeda Software,[21] Strata,[22] etc.)
Adobe Camera Raw (also known as ACR and Camera Raw) is a special plugin, supplied free by Adobe, used primarily to read and process raw image files so that the resultant images can be processed by Photoshop.[23] You use Camera Raw by opening an image file, rather than using the ‘Filter’ menu. Like other plugins, Camera Raw’s help information is in the ‘Help > About Plug-In’ menu (as “Camera Raw”). You can use Camera Raw also by Adobe Bridge, by clicking on any image and selecting ‘File > Open in Adobe Camera Raw’.

Tools

Upon loading Photoshop, a sidebar with a variety of tools with multiple image-editing functions appears to the left of the screen. These tools typically fall under the categories of cropping and slicing; drawing; painting; measuring and navigation; selection; typing; and retouching.[24] Some tools contain a small triangle in the bottom right of the toolbox icon. These can be expanded to reveal similar tools.[25] While newer versions of Photoshop are updated to include new tools and features, several recurring tools that exist in most versions are discussed below.

Cropping and Slicing

The crop tool can be used to select a particular area of an image and discard the portions outside of the chosen section. This tool assists in creating a focus point on an image and excluding unnecessary or excess space.
The “slice” and slice select tools, like the crop tool, are used in isolating parts of images. The slice tool can be used to divide an image into different sections, and these separate parts can be used as pieces of a web page design once HTML and CSS are applied.[27] The slice select tool allows sliced sections of an image to be adjusted and shifted.

Drawing

Photoshop includes a few versions of the pen tool. The pen tool creates precise paths that can be manipulated using anchor points.[24] The freeform pen tool allows the user to draw paths freehand, and with the magnetic pen tool, the drawn path attaches closely to outlines of objects in an image, which is useful for isolating them from a background

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