Canon Off Camera Shoe Cord 2, 60cm TTL Off-Camera Flash Cable

The Canon Off Camera Shoe Cord 2 maintains all on-camera flash functions (including E-TTL) for one Canon Speedlite used off-camera at distances up to 60 cm.  It is compatible with all Canon EOS cameras except the 630 and RT(which require a combination of TTL Hot Shoe Adapter 3, OA-2 Off Camera Shoe Adapter & Connecting Cord 60).  It is also fully functional with the combination of the T90 camera and 300TL flash(from Canon's older FD manual focus system).