Canon 580ex Specs



Compatible Cameras

E-TTL operation with all EOS digital SLRs; PowerShot G2, G3, G5, G6, and Pro1; and the following EOS film cameras – EOS-1v, EOS-3, Elan 7N series, Elan 7 series, Elan II series, Rebel T2, Ti, K2, GII, G. 
TTL operation with all other 35mm EOS SLRs, and Canon T90.

Guide Number

190 (at ISO 100, feet) / 58 (meters); flash head at 105mm zoom setting

Number of Flashes

Approx. 100 to 700, with fresh AA-size alkaline batteries

Recycling Time

Approx. 0.1 to 6 seconds, with fresh AA-size alkaline batteries

Flash Range

(At ISO 100, with 50mm f/1.4 lens at f/1.4) – Approx. 1.6 to 98.4 feet / 0.5 to 30m

AF Assist Beam

Built-in; covers all focus points in EOS cameras with 1, 3, 5, 7, 9, or 45 AF points; Distance range – 2 to 32.8 feet (0.6 to 10m) at center; 2 to 16.4 feet (0.6 to 5m) at periphery

Custom Functions

Fourteen Speedlite Custom Functions built-in; set on Speedlite’s LCD panel



Power Source

Four AA-size batteries – alkaline, lithium, or rechargeable Ni-MH usable

External Power Source

External power supply – compatible with Dust- and water- Resistant External Power Pack, Canon battery pack CP-E3 and Transistor Pack E


3.0 x 5.3 x 4.5 inches /76 x 134 x 114mm


13.2 oz./375g, without batteries (4 AA alkaline batteries add 3.5 oz./100g)