Digital Photography Glossary: D
defraction: The breaking up of a ray of light into dark and light bands or into the colors of the spectrum, caused by the interference of one part of a beam with another.
depth of field: The zone of sharp focus in a photograph.
diffusion screen: A thin screen-like material that diffuses or softens a light source’s illumination.
digital zoom: A feature offered on most digital cameras; crops the perimeter of the image and then enlarges the area at the center. Results in reduced image quality.
diopter adjustment: A viewfinder feature that corrects for common eyeglass prescriptions so eyeglass wearers can use the viewfinder without wearing their glasses.
downsample: Remove pixels from a digital image.
DPOF: Stands for digital print order format. A feature offered by some digital cameras that enables you to add print instructions to the image file; some photo printers can read that information when printing your pictures directly from a memory card.
drive mode: Setting that determines whether a camera takes a single picture or a series of pictures.
driver: Software that enables a computer to interact with a digital camera, printer, or other device.
DVD: Digital video disc. A high-density compact disc for storing large amounts of data, especially high-resolution audio/video material.
DVD burner: A device that allows you to copy (or burn) information onto a DVD.
DVD player: A device that displays the information contained on a DVD.
DVI interface: Digital Video Interface. A specification to accommodate analog and digital monitors with the same cable.
dye-sublimation printer: A type of printer that uses a printing technique in which inks are heated and transferred to a polyester substrate to form an image.