Presentation on theme: "File Types, Sizes & Dots Per Inch (dpi) Best practices applied to Photoshop file formats when creating media-specific documents. Bit Depth is the number."— Presentation transcript:
File Types, Sizes & Dots Per Inch (dpi) Best practices applied to Photoshop file formats when creating media-specific documents. Bit Depth is the number of colors your image contains: 24 bit = millions of colors 16 bit = thousands of colors 8 bit = 256 colors 4 bit = 16 colors Data Compression is a process of encoding info with fewer bits: Lossless = reversible with more algorithmic data Lossy = loss of data Adobe Photoshop File Formats
Adobe Photoshop File Formats.psd PhotoShop Document dpi 300 pixels work large! work in layers
Adobe Photoshop File Formats.jpg Joint Photographic Expert Group dpi depends on purpose detail 300 dpi print >150 dpi screen 72 dpi JPG is a "lossy" compression, resulting in data loss. Used for photographs and images with continuous tones and large gradients. Do not save/edit in jpg! Image: From the department of unsourced photographic Internet literalisms
Adobe Photoshop File Formats.gif Graphical Interface Format dpi 72 pixels Animated Static Image: Watt Curve by Claudio Rocchini GIF supports images that are 8-bit (256 colors) or less. Use GIFs for illustrations, clip art, and images without gradients.
Adobe Photoshop File Formats.png Portable Network Graphics dpi 72 pixels PNG is an improvement on GIF - with gradients and transparencies in "lossless" format - Designed for RGB color palettes, not print.
Adobe Photoshop File Formats.tiff Tagged Information File Format dpi depends on purpose Archive >300 dpi TIFF is an adaptable file format for handling images and data within a single "lossless" file or no compression at all. This format is useful for image archiving - can include header tags and vector-based information.
Adobe Photoshop File Formats.pdf Portable Document Format dpi depends on purpose highly customizable PDF is an open standard for document exchange with encapsulated information. PDFs can store a fixed-layout document that includes the text, fonts, images, vector graphics and true graphic transparency.
Adobe Photoshop File Formats - File Formats - Summary.psdPhotoShop Document.jpgJoint Photographic Expert Group.gifGraphical Interface Format.pngPortable Network Graphics.tiff Tagged Information File Format.pdfPortable Document Format Consider… Bit Depth Data Compression DPI (dots per inch) Vector graphics