The Speedlite 430EX II features a powerful maximum guide number of 141.1' at ISO 100 along with a controllable zoom head design that covers lens focal lengths between 24-105mm. The flash head is capable of vertically tilting between 0-90° and swiveling 0-180° left or 0-90° right to aid in greater control over the direction of flash output. It is compatible with the E-TTL II system for accurate flash metering and, when used with compatible EOS DSLRs, full flash control is possible directly from the camera's menu system. A metal foot and quick-lock mechanism provide greater rigidity and efficiency when attaching to a camera and a minimum recycle time of 2 seconds with NiMH batteries allows for a quickened shooting style.