Nikon 1799 instruction manual Non-TTL flash modes

Non-TTL flash modes

In addition to TTL, flash modes such as Non-TTL Auto flash and manual flash are available. Flash mode availability depends on the type of Speedlight used; for details, see the instruction manual of the Speedlight.

•Auto Aperture Flash (AA)

The Speedlight’s built-in sensor measures the flash illumination reflected from the subject and controls flash output in combination with data automatically transmitted from the camera and lens to the Speedlight, including ISO sensitivity and exposure compensation values, and lens’ aperture and focal length.

•With the SB-80DX or SB-28DX, set Custom Setting “e3: AA flash mode” to “On” (x 105). With the SB-800, the Speedlight setting overrides the Custom Setting.

•Non-TTL Auto flash (A)

The Speedlight’s built-in sensor measures flash illumination reflected from the subject, automatically controlling the Speedlight’s light output to provide correct exposure. This enables you to make exposure compensation (x 74) easily by varying the aperture set on the camera or lens.

•With the SB-80DX or SB-28DX, set Custom Setting “e3: AA flash mode” to “Off” (x 105). With the SB-800, the Speedlight setting overrides the Custom Setting.

•Aperture must be set manually on the Speedlight.

•Distance-Priority Manual flash (GN)

In this flash operation, the Speedlight controls the light output automatically based on the shooting distance, aperture value and ISO sensitivity. Enter the shooting distance and you can take pictures having the same exposure even when shooting at different apertures.

•Manual flash (M)

In Manual flash photography, you select the aperture and flash output level. This allows you to control the exposure and flash shooting distance when shooting subjects where the correct exposure is difficult to obtain in TTL or Non-TTL Auto flash mode. The flash output level can be set from M1/1 (full output) to M1/128 to suit your creative preferences. (Usable flash output level depends on the Speedlight.)

•Repeating flash (RPT)

In Repeating flash operation, the Speedlight fires repeatedly during a single exposure, creating stroboscopic multi-exposure effects. This feature is useful when shooting fast- moving subjects.

•Manually set the flash output level, frequency (Hz), and number of repeating flashes per frame.

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Flash Photography