Nikon SB-800 Setting the ISO sensitivity, Available ISO sensitivity in TTL auto flash operation

4 Setting the ISO sensitivity

In this manual, the sensitivity for digital SLRs and the film speed for film-based cameras are generally referred to as ISO sensitivity.

For cameras compatible with CLS, digital SLRs not compatible with CLS, cameras in Groups I to II, and COOLPIX cameras compatible with i-TTL, the ISO sensitivity is automatically set and appears on the LCD panel when the camera and SB-800 are turned ON.

■■■ Available ISO sensitivity in TTL auto flash operation

The SB-800’s maximum ISO sensitivity range usable in the TTL auto flash mode is ISO 25 to 1000.

•The ISO sensitivity range may become narrower, depending on the cameras in use. For details, see your camera instruction manual.

•The flash shooting distance range on the SB-800’s LCD panel varies, depending on the ISO sensitivity. Therefore, be sure to set the ISO sensitivity correctly.

uDigital data communication with the SB-800

When the SB-800 is used with cameras compatible with CLS, digital SLRs not compatible with CLS, cameras in Groups I to II, or COOLPIX cameras compatible with i-TTL, digital data communication is performed. The camera automatically sends the ISO sensitivity to the SB-800. With a CPU lens, the aperture and focal length are automatically set on the SB-800 (except for COOLPIX cameras compatible with i-TTL).

uNotes on setting the Speedlight’s ISO sensitivity

In the TTL auto flash mode and Manual flash mode (except Distance-priority manual p flash), there is no direct connection between setting the ISO sensitivity on the Speedlight and controlling the flash output level. Setting the ISO sensitivity is for correctly displaying the flash shooting distance range or the shooting distance indication on the Speedlight’s LCD panel.

In the Non-TTL auto flash mode (Auto Aperture flash B/Non-TTL auto flash A) and Distance-priority manual p flash operation, the correct exposure can be obtained by setting the camera’s ISO sensitivity on the Speedlight, because the Speedlight controls the flash output. For cameras compatible with CLS, digital SLRs not compatible with CLS, cameras in Groups I to II and COOLPIX cameras compatible with i-TTL, the ISO sensitivity is automatically transferred from the camera to the Speedlight.

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