Nikon SB-24 instruction manual Center-Weighted Fill-Flash, Standard TTL Flash

CENTER-WEIGHTED FILL-FLASH

While the Matrix meter can automatically measure up to five different segments of the scene'sbrightness, the Center- Weighted meter measures the entire scene and emphasizes its reading on the center area. 8y pointing the center-weighted area at different parts of the picture, you can choose which bright- ness level you want for the basic available·lightexposure, as compared to the Matrix system which uses computer evaluation to determine the brightness/contrast levels upon which exposure will be based.

If the brightness value you have selected is within the controlled shutter/aperture range possible, the flash output compensation will be automatically set for a natural fill-flash effect. The amount of computer selected automatic compensation available varies with each Nikon SLR model. For details, check your camera instruction manual. If you select a brightness value beyond the controlled shutter/aperture range, the flash output will be set without compensation, as with standard TTL flash operation.

STANDARD TTL FLASH ~

This mode may be used with either the Matrix Meter or Center· Weighted Meter. It differs from balanced fill-flash operation by allowing you to manually select the amount of flash compensa- 1 tion instead of having the computer select it automatically. You select the amount of compensation, from EV +1 to EV -3,using the S8·24's EV compensation scale.

80th Matrix and C-enter-Weighted modes always incorporate some form of computer compensation, even if you make adjustments manually. In Standard TTL mode, only your manually selected compen~ation amount is used.

For manual flash output compensation, see pages 46 to

47.

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