QuickTime

QuickTime Apple developed this standard for motion video. .MOV is the file format and QuickTime video has the capacity to include an audio track.

Rangefinder

Rangefinder When you shoot pictures with a less expensive or compact digital camera, you won't be looking through the lens, as with a DSLR camera. You'll look through a separate viewer, which is typically above and to the right or left of the lens. This can cause a distortion known as parallax.

Red-Eye

Red-Eye Also known as pink-eye, this is when the light of an electronic flash hits the retina at the back of the eye directly. You may have seen this effect in wildlife films of animals shot at night. To eliminate red-eye, use a flash unit that allows you to remove it from your camera and hold it at a...

Reflector

Reflector Any kind of surface that helps you to reflect light onto a specific portion of a picture, such as a person's face in a shadow. Reflectors are available as professional photography equipment or can be handmade. Reflectors can also be large boards that are white or coated with a reflective surface.

Response Times

Response Times This refers to the amount of time required for various functions on your digital camera (startup, shutter lag and pauses between shots) to work. Each type of camera has different response times. The better the digital camera (DSLRs, especially), the faster the response times.

RGB

RGB This acronym is for Red, Green and Blue. All other colors are mixtures of these primary colors in various combinations. Mix one of these colors with another and you'll create the secondary colors of cyan, magenta and yellow. Typically, your computer stores your photos as RGB images, but you'll...

Rule of thirds

Rule of thirds This is a compositional concept to help you place the primary subject or object of your photo at the most pleasing location within the frame. When you look through your camera, imagine two equally spaced vertical and horizontal lines creating a gird of nine squares (like Tic-Tac-Toe). You want to...

Scanner

Scanner This is a device you connect to your computer to scan or digitize old photo prints or other documents. A scanner has a glass surface similar to a photocopying machine on which you place the document face down, so it can be scanned. Many printers include a scanning feature, or you can purchase a...