Type: Thyristorized computer flash w/series control system
Attachment: Canon One-Touch Bracket
Synchronization: Through separate sensor unit mounted on camera's direct contact shoe or with synchro cord
Guide Numbers: (ISO 100, feet): Normal - 118 72 with Wide Adaptor 533G-24 59 with Wide Adaptor 533G-20 167 with Tele Adaptor 533G

Flash Coverage: For 35 mm format, covers angle of view of 35 mm lens without adaptors
24 mm lens with Wide Adaptor 533G-24
20 mm lens with Wide Adaptor 533G-20
100 mm lens with Tele Adaptor 533G

Recycling Time: With Alkaline-Manganese batteries: approximately 10 seconds With Ni-Cd Batteries: approximately 5.5 seconds
Number of Flashes: Alkaline-Manganese batteries: 120-1200 allowing 30 seconds between flashes Ni-Cd batteries: 55-555 allowing 30 seconds between flashes
Color Temperature: Same as Daylight
Flash Duration: 1/800th-1/50,000th second
Flash Control System: Automatic flash sensor measures light reflected back from subject and cuts output when sufficient illumination is sensed
Metering Sensitivity Pattern: Average measurement
Auto Flash Ranges: Three different flash ranges are provided for flexibility and control of depth-of-field
Auto Apertures: (ISO 100): Red-f/2.8 Green-f/5.6 Yellow-f/1 1
Dimensions: 3-11/16 x 4-1/8 x 9-3/4 in.
Weight: w/o batteries: 23-1 /8 oz. Canon product code: -050-0391