File types

Here are some terms for the first quiz on Chapter 8 (putting the digital in Digital Photography) which you should expect this Friday, April 11.

• BMP: Bitmap, BitMapPed or "Bump" image. Old, just for Window's, clunky but lossless
• PNG: Portable Network Graphics, lossless, latest generation for phones, MP3, MP4, and PDAs etc. etc.
• GIF: Graphic Image File, lossy, meant primarily for the internet, features indexed color
• JPEG: file type devised by the Joint Photographic Experts Group, a committee formed by the International Standards Organization (ISO). Lossy, most commonly used by newspapers, excellent for emailing and uploading
• PSD: PhotoShop Document
• TIFF: Tagged Image File Format, lossless, ideal for graphic designers, magazines and books
• PICT: a PICTure file that can only be read by Apple programs
• RAW: Raw, unprocessed, straight off your digital camera, lossless, best for high-end professional photography
• Compression- refers to the process of reducing an image's file size so that it doesn't absorb a large amount of computer memory.
• Lossy- An image-compression scheme, such as JPEG, that creates smaller files by discarding image information, which can affect image quality
• Lossless- compression uncompresses an image so its quality matches the original source-nothing is lost.