Rule of thirds – A photo-composition rule that divides the frame into nine equal areas. Subjects could be aligned along one of the lines or appear at an intersection.
Shutter speed – Shutter speed determines how long the shutter stays open; it controls the amount of time light is allowed to reach the film. Short shutter speeds are good for action and sunny-day photos. Slow shutter speed is good for low-light situations.
TIFF – Tagged Image File Format; an image format popular among Apple Macintosh owners, graphic artists, and the publishing industry.
TWAIN – Technology Without An Interesting Name; the standard interface between software applications and image-capturing devices such as scanners.
