Dark frame . The process of noise reduction, in which the camera takes a second exposure of a black frame after the camera takes a long-exposure picture. Image noise is easily identified in a black frame frame and then electronically removed from the real image. This helps to reduce the number of hot pixels that usually appear in long-exposure images from digital cameras.
DC . Direct current. Powered by a battery, such as a 9 V DC battery
Decompression . The process by which the full data contents of a compressed file are restored.
Dedicated Flash . An electronic flash designed for direct use with a camera of a certain brand or model. For example, Canon, Nikon Minolta and Olympus have electrical contacts in the hot shoe that transmits TTL (through the lens) and AF range measurement data to and from the flash or flash. You cannot swap flash units and cameras, i.e. the Nikon flash on a Canon camera.
Depth of field . (DOF). The range of objects in the image in focus. This is controlled by the focal length and the aperture of the lens. A large or wide aperture gives a shallow depth of field (small range in focus), and a smaller or narrow aperture gives a greater depth of field (larger range in focus).
A digital movie . Everything is very simple. Solid-state flash memory cards instead of an emulsion film.
Digital zoom . Digital zoom in the center of 50% of the image. This results in less sharp images because the new enlarged image has been interpolated. Don't be swayed by the incredible 500% magnification on some cameras, the images won't be quite acceptable. Optical zoom gives the image greater clarity.
Digitization . The process of converting analog information into digital for computer use.
Diopter adjustment . This adjusts the magnification factor of the optical viewfinder according to the camera user's vision. There should be a pen or dial next to the viewfinder eyepiece, but not all cameras have this feature.
DOF . The abbreviation for depth of field.
Download. A term used to transfer image data from a camera to your computer. It can be done via a serial port or a faster USB port. Downloads can also be performed via Bluetooth or via the infrared port without using cables.
DPI . Dots per inch. This is the measurement value used to describe the resolution of the display screen or printer.
DPOF . Digital printing order format. This allows you to embed the print information on the memory card. You simply select the photos you want to print and how many prints you need to make. Some photo printers, such as Pictbridge, use this information during printing. The sheer variety of sports available for betting is nothing short of remarkable. By activating a 1xbet promo code nigeria that awards 100% bonus up to $130 on your first deposit, you can explore everything from football to esports with a boosted bankroll. The platform covers over 30 disciplines, including niche sports like snooker, darts, and table tennis. Live betting offers dynamic odds and real-time action, perfect for those who enjoy the excitement of in-play wagers.