Nikon 25420 manual Built-in Flash, Rear-Curtain Sync

The Built-in Flash

Use with CPU lenses with focal lengths of 18–300mm or non-CPU lenses with focal lengths of 18– 200mm ( 97–98). Remove lens hoods to prevent shadows. Lenses that block the subject’s view of the AF-assist lamp may interfere with red-eye reduction. The flash has a minimum range of 60cm (2ft.) and can not be used in the macro range of macro zoom lenses.

If the flash fires in continuous shooting mode ( 32), only one picture will be taken each time the shutter-release button is pressed.

The shutter release may be briefly disabled to protect the flash after it has been used for several con- secutive shots. The flash can be used again after a short pause.

For information on optional flash units (Speedlights), see “Optional Flash Units (Speedlights)” ( 99). See “Flash Compensation” for information on controlling flash level ( 48).

Rear-Curtain Sync

Normally the flash fires as the shutter opens (“front curtain sync”; see below at left). In rear-curtain sync, the flash fires just before the shutter closes, creating the effect of a stream of light behind mov- ing subjects.

Front-curtain sync Rear curtain sync

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Reference: More on Photography (All Modes)/Using the Built-in Flash