Speedlite 470 EX-AI

Type Mode: E-TTL II, E-TTL, TTL
Compatible Cameras All Canon EOS cameras; PowerShot G series cameras
Guide Number 141 ft./43m (at ISO 100); flash head at 105mm zoom setting
Flash Coverage Fixed condenser lens with inner zoom: (1) Auto Zoom, (2) Manual Zoom, (3) Wide Panel

Zoom positions: 24mm, 28mm, 35mm, 50mm, 70mm, 80mm, 105mm; Indicated by numerals on the LCD''s focal length display

Image Size Zoom Control: With cameras compatible with auto zoom, it zooms automatically to match the camera''s image size
Number of Flashes Approx. 200 to 1,400, with AA-size Alkaline Batteries manufactured within the last three months or AA-size Ni-MH fully-charged batteries
Recycling Time Approx. 0.1 to 3.7 seconds (AA-size Alkaline Batteries)/0.1 to 2 seconds (AA-size Ni-MH batteries)
Flash Range At ISO 100, with EF 50mm f/1.4

For normal flash: Approx. 2.3-79.7 ft./0.7-24.3m

For high sync speed (EF flash): Approx. 2.3-39.4 ft./0.7-12m
AF Assist Beam Built-in; covers all focus points in EOS cameras up to 9 AF points

Effective range:

At center: Approx. 2.3-32.8 ft./0.7-10m

Periphery: Approx. 2.3-16.4 ft./0.7-5m (in total darkness)
Custom Functions Six user-selectable Custom Functions built-in; set on Speedlite''s LCD panel
General
Power Source Four AA-size Alkaline Batteries (6V); Four AA-size Ni-MH (4.8V)
Dimensions 2.8 x 4.8 x 4.0 in./72 x 122 x 101mm
Weight 11.6 oz./330g (without batteries)