This format is used for storing bitmap images with improved levels of color and brightness performance. It combines exposures to record darker tones in the shadows or detail in the lighter areas of a given photo. HDR is able to combine multiple images with different levels of light distribution. It is used to create rich images.
TIFF is a format for storing raster graphics. It is used for scanning and OCR text, faxing, printing industry, is widely supported by a variety of graphics applications. The format was developed by Aldus Corporation in collaboration with Microsoft for use with PostScript. Who is copyright to it owns Adobe Systems. The format used to store images with great depth of color.