Glossary

AEL (Auto Exposure Lock)

AEL is recommended for shooting small dark subjects against a bright background or for shooting dramatic sunset scenes. When AEL is used in auto exposure mode, camera automati- cally switches to Center-Weighted Metering.

AF illum inator

When existing light is below a certain level and the camera is set for autofocus mode, the 8B-24/8B-23/8B-22/8B-20'sAF illuminator turns on automatically and provides enough subject contrast to enable the NSOOS'sautofocus system to function as though it were daytime.

Balanced fill-flash operation

A method of flash photography that keeps flash brightness in balance with the ambient light. (8ee "Fill-flash.")

With the built-in TIL flash or Nikon-dedicated TIL-controlled 8peedlights, the NSOOS performs automatic balanced fill-flash, called Matrix Balanced Fill-Flash, so both subject and back- ground are correctly exposed, to produce a well-balanced picture. (For automatic balanced fill-flash, see page 46.)

Center-Weighted Metering

In manual mode, or when the AEL button is used in auto exposure modes, the camera automatically switches to Center- Weighted Metering. This secondary metering system places special emphasis on brightness within the 12mm-diameter central area of the viewfinder, making the NSOOS exceptionally versatile for a wide variety of subjects.

Depth of field

The zone of acceptable sharpness in front of and behind the subject on which the lens is focused. Depth of field can be increased by using small apertures (larger f-numbers) or short focal-length lenses, or by taking the picture from farther away. To reduce depth of field, use larger apertures (small f-number), long focal- length lenses, and/or near subjects.

OX code

Film information code printed on the film cartridge. The NSOOS automatical ly senses the film speed (180 2S to SOOO) of DX- coded film the instant it is loaded.

Exposure Value. A number representing the available com- binations of shutter speed and aperture that give the same exposure effect when the scene brightness and 180 remain the same.

At 180 100, the combination of a one-second shutter speed and an aperture of f/1.4 is defined as EV1.

The camera'smeter may be used only within EV range of the exposure meter. For example, with the NSOOS, exposure meter- ing range is from EV 0 to EV 19 at 180 100 with 111.4 lens.

Exposure control

Programmed auto: Camera controls both shutter speed and aperture for correct exposure.

8hutter-priority auto: User selects shutter speed and camera chooses aperture for correct expoSure.