Pentax ZX-7 ZX-7 Manual - Page 35

AF illuminator When the shutter release button halfway down where it is hard for autofocus to work, such as in a dark place, the built-in flash discharges continuously to provide illumination, making it easy for the autofous to work. • The effective range of AF illuminator is approx. lm to 5m. • The AF illuminator of the built-in flash does not work if you use the soptbeam of the external flash such as the AF500FTZ or AF330FTZ flash. • The AF illuminator does not work either when the Action Program Mode has been selected with the focus mode switch set to the MF position or when the flash disable mode has been selected. • The external flash discharges if the AF spotbeam works when the AF500FTZ is attached and the slave flash function is in use. You should therefore set the focus mode switch to the MF position before using the slave function. EMI Red-eye Reduction Flash Function This camera includes a red-eye reduction flash function, which reduces the red-eye phenomenon utilizing preflash. In this mode, the preflash is dis- charged just before the shutter is released which reduces the diameter of the pupil of the eye. Then the main flash is discharged while the pupils are co smaller, which in turn reduces the red-eye effect. cn 5 About Red-eye Phenomenon 0 Shooting portraits with flash in a dark environment rn often causes a subject's eyes to turn out reddish in the print. This phenomenon, commonly known as "Red-Eye", is caused by the reflection of the 0 z electronic flash in the retina of your subjects eye. O) It can be reduced by taking the photo in a brighter light condition or by shooting with a wider angle 0 lens at a closer distance, or by employing the red- eye reduction flash feature. When using a Pentax dedicated flash unit off the camera, it may also help to position the flash as far away from the camera as possible.