2 Raster Graphics Also called bitmap graphics Consist of grids of tiny dots called pixelsHave a fixed resolution and cannot be resized without altering image qualityEdited in paint programsTeacher Note: Enlarging raster graphics causes them to become pixilated (you can see the individual blocks of colors that make up the image).
3 Raster graphics Can support high color depths. Most common type of raster is a digital photograph.Great for adding special effects.Work well for web design.Used to create images for print design.
4 Raster graphicsNative File Formats: file formats that are default file format that are proprietary to a specific program that are generally not meant to be used with other software.Standard File Formats: file formats that can be used with a variety of software programs. Standard file formats are usually created by using the “Save As” command or through exporting. Standard file formats include, but are not limited to: .gif, .jpg, .png, and .tif.
6 PSD – Photoshop document 1.01 Investigate graphic types and file formats.PSD – Photoshop documentNative file format for Adobe PhotoshopSupports transparencySupports layers, text, and effectsLarge file sizes.Industry standard for raster graphic editing
7 GIF – Graphics Interchange Format Most common format for:TextClip art, animations, icons, logosSimple diagrams, line drawingsGraphics with large blocks of a single colorGraphics with transparent areasImages displayed on computer screens and on websites.Standard format for animation on the InternetSupports transparencyLossless compressionColors = 256 (8-bit)
8 JPEG – Joint Photographic Experts Group Commonly Used For:Desktop publishing photographsPhotographs and natural artworkScanned photographsing photographsDigital camera photographsDoes not support animation or transparencyLossy compression.Colors – 16.7 M (24-bit)High qualityTeacher Note: This format is best for images containing many colors or shades of color. Most digital cameras save the images made with the camera as JPEG files on their memory cards.
9 PNG – Portable Network Graphics Does not support animationSupports transparencyLossless compressionSupports multiple color depthsPNG 8 – 8 bit colorSmall GraphicsPNG 24 – 24 bit colorBasic GraphicsCommonly Used For:Replacing GIF and TIFF imagesOnline viewing of imagesSee examples atTeacher Note: Browser software or image editing program may require the user to download a plug-in before recognizing or opening the file.
10 TIFF – Tagged Image File Format Does not support animation or transparencyAvailable in compressed (lossless) and un-compressed formatsCompressed is advisedColors – 16 M (24-bit)Commonly Used For:Storage container for faxes and other digital imagesTo store raw bitmap data by some programs and devices such as scannersHigh resolution printingDesktop Publishing imagesTeacher Note: TIFF images have very high quality which is ideal for faxes or printed images, such as those used in desktop publishing. However, this results in a large file size so it is not recommended for images that will be viewed over the Internet.
11 PDF – Portable Document Format 1.01 Investigate graphic types and file formats.PDF – Portable Document FormatOpen source, platform independent format that embeds fonts, images, layouts, and graphicsAllows choice of lossy and lossless compressionSupports 16 million colorsViewable with Acrobat Reader, a free program by AdobeCommonly used for:Sharing files regardless of available softwareShare files that can be protected from copying or editingPublishing electronic documents and ebooks