DESC: The Phoenix SmartFlash 99c Shoe-Mount Flash is a compact shoe mount flash that is fully compatible with the of Canon's digital SLR cameras. It fully supports Canon's E-TTL II (Evaluative Through The Lens) auto exposure technology. When combined with a compatible Canon camera (all the digital SLRs) and compatible lens, E-TTL II utilizes subject distance and other information that automatically modifies flash power, resulting in accurate flash exposure regardless of subject size, reflectance, or photographic composition.