Pentax ist DL User Manual - Page 54
Using Red-eye Reduction Flash, Daylight-Sync Shooting, Taking pictures Auto Picture
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52 Using Red-eye Reduction Flash Red-eye is the phenomenon where eyes look reddish in photographs taken in dark environments with a flash. This is caused by the reflection of the electronic flash in the retina of the eye. Red-eye occurs because pupils are dilated in dark environments. This phenomenon cannot be averted but the following measures can be used to combat it. • Brighten the surroundings when shooting. • Set to wide angle and shoot from closer if a zoom lens is in use. • Use a flash that supports red-eye reduction. 3 • Position the flash as far away from the camera as possible when using an external flash. The red-eye reduction function on this camera reduces red-eye by discharging the flash twice. With the red-eye reduction function, the pre-flash is discharged just before the shutter is released. This reduces pupil dilation. The main flash is then discharged while the pupils are smaller, reducing the red-eye effect. To use the red-eye reduction function, set C (Red-eye reduction auto flash) in Picture mode or D (Red-eye reduction manual flash) in other modes for Flash mode. Basic Operations Daylight-Sync Shooting In daylight conditions, the flash will eliminate shadows when a portrait picture is taken with a person's face cast in shadow. Use of the flash in this way is called Daylight-Sync Shooting. Flash is discharged manually when shooting with Daylight-Sync Shooting. Taking pictures (Auto Picture) 1 Confirm that the flash has popped up and the flash mode is set to b (Manual discharge). (p.51) 2 Confirm that the flash is fully charged. 3 Take the picture. The picture may be over-exposed if the background is too bright. Without Daylight-Sync With Daylight-Sync