As the previous reviewer said, it's nowhere near 12 feet long. Rolled up and not stretched at all, mine was about 55cm (about 21 inches). When you try to stretch it, it's quite stiff, so if you stretch it about 47 inches (1.2 m), it creates a lot of resistance. This probably means that if you mount the flash on a tripod and stretch it out to about 1m, then either the camera tripod or the flash stand will be dragged, which is not good. TTL seems to work well internally (tried with SB-900 and Nikon D5000) because when the SB-900 is connected it recognizes focal length, ISO etc. but I'd really like it stretched to 3.6 meters and in real use see . You CAN probably stretch it that far, but the drag it creates will surely tip your tripods.
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