Compatible with Canon E-TTL / E-TTL IIGuide Number: 85.3' at ISO 100 and 50mmCoverage: 24mm & 50mm (Full Frame)Tilts Upward 90°Rotates Left 150°, Rotates Right 180°Wireless Slave TTL FunctionalityRecycle Time: 0.1-5.8 SecondsStroboscopic Mode,1st & 2nd Curtain SyncMode DialRuns on Two AA Batteries Simple and compact, the Speedlite EL-100 from Canon is a sleek strobe designed to give you more control, flexibility, and power than your camera's built-in flash. Offering a guide number of 85.3' at ISO 100 and 50mm, this flash also has a 90° tilting range, 330° rotating, and a similar spread to that of a 24mm to suit working in a variety of indoor and outdoor situations. Guide number of 85.3' at 50mm and ISO 100Flash head offers 0 to 90° of tilt along with 150°/180° of rotation for full bounce flash capabilitiesBoth 24mm and 50mm focal length positions to better suit working with different lensesAdjustable output settings from 1/1 to 1/128 powerMode dial features an AUTO setting to allow your camera to determine whether or not the flash is needed and will fire when necessaryMode dial also permits choosing between three flash groups and a slider permits selecting between four channelsOptical receiver mode for off-camera triggeringStroboscopic setting for rapid, repeating firing that can be used for creative effects during long exposuresSecond-curtain sync helps to emphasize moving subjectsAF assist beam benefits focusing performance in low lightAccepts two AA batteries as its power sourceMetal locking foot