TIFF
From The Glossary of Digital Photography
An abbreviation for Tagged Image File Format. TIFF is a common file format used for storing images, especially those being worked on. TIFF images can be opened and resaved without creating artifacts because the TIFF image file is usually an uncompressed file. Even when the file is compressed, the compressed version, known as TIFF-LZW, uses a lossless compression method. TIFF is a good file format for digital photographers to store their final retouched master images. See also LZW
