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