Single-Lens Reflex (SLR): An SLR, or single-lens reflex, camera is named for its picture-taking mechanism. In a film SLR, the viewfinder uses a 45°-angled mirror to see through the lens; that mirror snaps out of sight quickly when you press the shutter button, to let light enter and expose the film. A digital SLR works the same way, except that the shutter is opening to let an electronic sensor record the image. SLRs are revered by serious photographers because they permit the use of many different specialized lenses and flashes, and provide faster response time and higher continuous shooting speed than most point-and-shoot cameras.

 

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Single-Lens Reflex (SLR): An SLR, or single-lens reflex, camera is named for its picture-taking mechanism. In a film SLR, the viewfinder uses a 45°-angled mirror to see through the lens; that mirror snaps out of sigh . . . View Full Definition

Reflexology: Based on an ancient Chinese therapy, reflexology involves manipulation of specific reflex areas in the foot, hands, and ears that correspond to other parts of the body. Sometimes referred to . . . View Full Definition

Reflexognosy: Reflexognosy is the application of appropriate pressure to the leg and feet, by the hands of a trained practitioner, to bring about physiological and psychological changes in the body.

Self-Reflexivity: A program which refers back to itself or similar programs. In a genre's evolutionary pattern, the stage during which the genre turns inward and uses its own conventions for subject matter, o . . . View Full Definition