The Metz 45-CL4 Digital Flash is a heavy-duty handle mount flash that supports even the advanced TTL systems used with Digital SLR cameras: E-TTL II flash mode from Canon, i-TTL/i-TTL-BL and D-TTL from Nikon or ADI flash control from Sony/Minolta. The 45 series is the smallest amongst Metz handle-mount flashes that provide TTL capability.
In conjunction with the SCA-3045 connection cable and a dedicated SCA 3002 system module, this flash will fully support all advanced functions of the camera and/or flash (where supported by the camera). This kit is the "basic" version, with just a AA battery holder and simple PC cord included. These are enough for the photographer who likes to keep things simple and who likes to shoot in manual mode.