Pentax 500FTZ Operation Manual - Page 27

AF SPOTBEAM The AF500FTZ features a built-in infrared spotbeam projector to assist the autofocus system in dim light and low-contrast conditions. The AF spotbeam projector operates with camera set to the autofocus mode (AF SINGLE mode with Z-1/PZ-1, SFX/SF1 SFXN/SF1N). With the sync mode switch set to [S.B.], the AF500FTZ can be used exclusively as a focusing aid in dim light. •When used in the dark condition, the spotbeam will be projected automatically depending on the ambient brightness and if the flash Ready lamp is lit. USING THE AF500FTZ SPOTBEAM EXCLUSIVELY AS A FOCUSING AID . 1. Set the main switch to [I] . 2. Set the sync mode switch to [S.B.] . 3. Set the camera to the autofocus mode (AF SINGLE mode on the Z-1/PZ-1, SFX/SF1, SFXN/SF1N). 4. Depress the shutter release button halfway down. The AF spotbeam will automatically be projected and the In-Focus Indicator lights up in the viewfinder indicating that you are ready to shoot. •The AF spotbeam does not work in bright light conditions. • , • If the Fl COI does not light up, it means the subject is hard to autofocus. In this case, use the manual focus mode to focus on the sub- ject. • To change the composition, raise your finger off the shutter release button and depress it halfway down again to recompose the picture. • When using the AF500FTZ's built-in AF spotbeam, the camera's AF spotbeam built into the Z-1/PZ-1, SFX/SF1, SFXN/SF1N or SF7/SF10 will not operate. • The AF spotbeam on the flash unit works accurately only when the flash unit is mounted onto the camera's hot shoe. • The flash does not discharge when using the AF500FTZ spotbeam exclusively as a focusing aid. 25