Table 5: HF-DC1 specifications
Flash type Slave flash unit
Guide number (max.) 18 (m) (at ISO 100)
Compatible models Cameras with a built-in flash that fires the main flash between 70 and 150ms after a single pre-flash
Trigger method Detects the flash of flash units that meet the specifications above
Flash interval No more than 7.5 seconds (when using a fresh battery)
Flash coverage Covers to the field of a 28mm lens (35mm equivalent)
Flash regulation Auto regulated with a photometer
Reception angle Light sensor: 20° (all directions), Slave: 70° (all directions)
Flash modes
Auto/Manual  
Auto :
Manual :
fires in sync with the camera's built-in flash
fires in sync with the camera's built-in flash only while the pilot lamp is pressed
Flash intensity levels
MAX/MID/MIN
 MIN : controls the flash for proper exposure with the camera set to ISO 100 and f/4.0
MID : controls the flash for proper exposure with the camera set to ISO 100 and f/5.6
MAX : controls the flash for proper exposure with the camera set to ISO 100 and f/8.0
Power supply Single CR123A or DC123 lithium battery
Number of flashes
(battery life)		 250 or more
Dimensions 46.0 x 66.0 x 29.7mm
Weight ~31 grams