The cable works as described, maintaining AFA on the camera body is appreciated. The AFA does not work without a flash attached and turned on with AFA enabled on the flash; that is this is not a stand alone AFA as well as an off camera flash cord. The length of the cord is a little unwieldy for my use but can be managed without any major issues. Of note, the focus assist beams are situated lower on the camera body then when used on a flash, when used with fairly large or long lenses with hoods e.g. 28-70 the hood obscures the bottom of some of the vertical AFA beam. This hasn't been a problem for me but it is worth knowing.
Nikon SC-29 TTL Off-Camera Shoe Cord with AF Assist - Coiled 3-9'
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The Nikon SC-29 is an off-camera flash cord that provides full TTL control for Nikon Speedlites when used with Nikon SLR cameras which have the TTL hot flash shoe. 3' long when coiled, it expands to 9', and permits easy use of flash when the camera is mounted upon a bracket.
In addition, the SC-29's AF Illuminator will also provide AF assistance to the camera in low-light conditions. This cord fully supports all advanced flash functions when used with the SB-900, SB-800 and SB-600 with an applicable camera.
Some other improved features are: Posi-Lock (an improved locking switch) at both ends, and the cord on the camera shoe that now connects parallel to the camera.