The Metz Mecablitz 52 AF-1 TTL Touchscreen Shoe Mount Flash for Pentax/Samsung DSLRs is a shoe mount flash, with an illuminated rear touchscreen, designed to be compatible with both current and future models of digital Pentax/Samsung SLR cameras. To better facilitate this compatibility with current and future cameras, this flash features a built-in USB port that allows for future firmware updates via the internet. A high quality metal base allows quick and easy attachment to the camera.The 52 AF-1 is designed to fully support a Pentax/Samsung digital SLR camera s TTL system. It can be operated as a TTL slave unit that can be controlled by the camera s own built-in commander mode or as a manufacturer s flash with master capabilities.The flash also features an auto zoom head from 24-105mm that can be set to match the camera s sensor, a full bounce and swivel head (with a fully swiveling reflector system which also contains a flip-out reflector card and a diffuser), a built-in wide angle diffuser for 12mm coverage and in addition, full manual control with 12 variable power output levels.