September 03,2010

Shutter Lag-

Is the delay between triggering the shutter and when the photograph is actually recorded.

Auto Focus-

Having the ability to focus automatically

Pixel-

The smallest element of an image that can be individually processed in a video display system.

Contrast Ratio-

Measure of a display system, defined as the ratio of the luminance of the brightest color (white) to that of the darkest color (black) that the system is capable of producing 

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Aperture-

Also called aperture stop . Optics . an opening, usually circular, that limits the quantity of light that can enter an optical instrument.

Shutter-

Photography . a mechanical device for opening and closing the aperture of a camera lens to expose film or the like.

Exposure-

To subject, as to the action of something

Depth of field-

The range of distances along the axis of an optical instrument, usually a camera lens, through which an object will produce a relatively distinct image.

Also called depth of focus.

F Stop- 

The setting of an adjustable lens aperture, as indicated by an f number. 

Focal length-

The distance between an object lens and its corresponding focal plane in a telescope.

Also called focal distance.