Nikon 1713 Instruction Manual - Page 52

Glossary CPU Central Processing Unit. The electronic component that controls an electronic product's functions. AF Nikkor (including D- and G-type AF Nikkor) and AI-P-Nikkor lenses have built-in CPUs. EV Exposure Value: A number representing the available combinations of shutter speeds and apertures that give the same exposure effect under conditions of similar scene brightness and ISO. At ISO 100, the combination of a one-second shutter speed and an aperture of f/1.4 is defined as EV1. The camera can be used only within the EV range of the exposure meter. For example, with the F65/F65D, the exposure metering range is from EV1 to EV20 for 3D Matrix Metering and Centre-Weighted Metering, at ISO 100 with an f/1.4 lens. Exposure bracketing Shooting the same subject a number of times at a range of different exposures to attain proper exposure. Three shots with metered EV, under EV, and over EV exposure are performed in that order with the F65/F65D. Automatic exposure bracketing is performed with varied shutter speeds and/or apertures. Exposure Compensation In a situation such as when your subject is strongly backlit, exposure compensation enables you to intentionally compensate the standard exposure value measured by the camera to create a desired effect. exposure compensation of -2 EV to +2 EV in 1/2 steps is available with the F65/F65D. Flash shooting distance range The distance range over which a flash can effectively provide light. Flash shooting distance range is controlled by the amount of flash output available. Each automatic Speedlight's flash output varies from maximum duration to minimum duration. Close-up subjects will require lower (to minimum) output, while more distant subjects will require more light up to the maximum output. The flash shooting distance range varies with the aperture, film speed, etc. Flash synchronisation Timing of the flash so it coincides with release of the camera's shutter. There are two types of synchronisation: Front-Curtain Sync, which fires the flash at the start of the exposure, and Rear-Curtain Sync, which fires the flash at the end of the exposure. Flash sync speed Shutter speed at which the entire film frame is exposed when the flash is fired in flash shooting. The F65/F65D's flash sync speed is 1/90 sec. or slower. Flexible Program Flexible Program function temporarily shifts an automatically selected shutter speed/aperture combination while maintaining correct exposure. That is, the desired shutter speed or aperture can be selected in Auto-Multi Program. f-number The f-number represents the aperture value and is calculated from lens' focal length divided by the effective aperture opening. The standard numbers for calibration are 1, 1.4, 2, 2.8, 4, 5.6, 8, 11, 16, 22, 32, etc. The smallest f-number is called maximum aperture and the largest f-number is called minimum aperture. Lenses with large maximum apertures (smaller fnumbers) are 'fast' lenses that allow photographers to use faster shutter speeds in dim light. Lenses with smaller maximum apertures (larger f-numbers) allow the use of lower shutter speeds for available light but are also lighter and smaller than faster lenses. MISCELLANEOUS 102 103