Accessories → Lighting & Sound
- -Guide number of 30'
- -Many functions can be controlled through the camera's menu system, such as the AF assist beam (used to ensure accurate AF in low light situations), Canon's amazing E-TTL II flash metering, FE lock and flash exposure compensation. Even color temperature information can be transmitted back to the camera with a simple touch.
- -For a number of advanced lighting setups, the Speedlite 90EX can be used as a master transmitter to control multiple flash units-wirelessly! Through 4 channel optical light pulse transmission, the Speedlite 90EX can control up to three groups of slave-enabled flashes, controlling power from 8:1 to 1:8 in 1/2-stop increments. It can transmit up to approximately 16.4 ft. indoors, up to 23 ft. outdoors.
- -With wide-angle coverage up to 15mm (24mm in 35mm terms) the Speedlite 90EX is designed to work perfectly with a number of popular wide-angle zoom and fixed length lenses.
- -Standard Canon hot shoe mount for compatibility with all EOS SLRs