Synchronisation TTL cord for Sony MIS flashes
VELLO OCS-SM15
Compatible with Sony Multi-Interface Shoe (MIS) & TTL MODE
Relaxed Lenght : 25cm (9")
Extended Lenght : Approx. 50cm (1.5') max.
This cable will allows you to deport your Sony MIS flash from your reflex DSLR to a support placed at 100cm maximum of this one, like a grip, a flash shoe or a tripod.
The TTL parameters will be transmitted throught this cable by the camera body to the flash, don't lose your time to manually adjust your flash settings.

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We can read here or there
The Vello TTL-Off-Camera Flash Cord provides creative photographers with the ability to remotely fire off-camera flash units that use the Sony Multi-Interface shoe. Removing the flash from the camera's hot shoe allows the photographer to create unique and dramatic lighting styles that are not possible with a traditional shoe-mounted strobe.
One side of the TTL cable fits directly into the camera's hot shoe to ensure that all of the camera's exposure data is maintained. The other side can be attached to any stand, tripod, or device with a standard 1/4"-20 threaded stud or flash shoe mount.
This coiled cord measures 1.5' (46cm), allows for handheld shooting at arm's length, and provides extra length for flash brackets with longer positioning arms.

Compatibility
Sony cameras with Sony MIS type TTL hot shoe
Off-Camera Lighting
Off-camera lighting can reduce harsh shadows of direct on-camera flash and gives your images a more natural look.
1,5' (50cm) Cable
The 1.5' cable accommodates off-camera hand-held technique.
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COMPATIBLE WITH ALL ACTUALS SONY REFLEX !
And others too...
Compatible with Sony Multi-Interface Shoe (MIS) without any adaptor !
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COMPATIBLE WITH ALL ACTUAL FLASHES SONY !
Compatible with flashes Sony with Multi-Interface accessory shoes without any adaptor !
As the HVL