DESC: Designed for today's SLR Cameras, the Quantary QDC 800 will provide a full range of automatic adjustments from camera to flash with either your Canon SLR Film or Digital Camera. This Flash-Set includes the QDC-CN E TTL Digital Flash Module.The QDC-CN E TTL Digital Flash module achieves fully automatic operation with your Canon Digital Rebel XT or 20D digital camera The QDC 800 will provide both TTL Flash exposure for Digital and Auto-Focusing for 35mm.