Pentax Q10 Mode D’Emploi

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Trailing Curtain Sync discharges the flash immediately before the shutter

closes. When shooting moving objects with a slow shutter speed, Trailing

Curtain Sync and Slow-speed Sync produce different effects depending

on when the flash is discharged.

For example, when shooting a moving car with Trailing Curtain Sync,

trailing light is captured while the shutter is open and the flash captures

the car immediately before the shutter is closed. Therefore, the picture will

include a sharp, well-lit car with trailing light behind it.

Relationships among the guide number, aperture and distance must be

considered when shooting with the flash to obtain a correct exposure.

Calculate and adjust the shooting conditions if the flash output is not

sufficient.

Using the Trailing Curtain Sync

Trailing Curtain Sync slows down the shutter speed. Use the Shake Reduction

function, or turn off the Shake Reduction function and use a tripod to avoid

camera shake.

Distance and Aperture when Using the Built-in Flash

Sensitivity

Built-in Flash

Guide Number

Sensitivity

Built-in Flash

Guide Number

ISO 100

Approx. 4.9

ISO 1600

Approx. 20

ISO 200

Approx. 7

ISO 3200

Approx. 28

ISO 400

Approx. 10

ISO 6400

Approx. 40

ISO 800

Approx. 14

Slow-speed Sync

(Leading Curtain Sync)

Trailing Curtain Sync

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