Sea & Sea Internal Optical YS Converter N (D7100) (D810)

Sea & Sea Internal Optical YS Converter N (D7100) (D810)

SKU # ss.50126


A compact unit that converts the camera's TTL signal to a light signal. The converter can be mounted on the camera's accessory shoe and can be connected to (a) SEA&SEA strobe(s) with Fiber-Optic Cable(s) (*). TTL and manual modes can be switched by pushing the mode switch on the housing.

Advantages of using the Optical YS Converter and not using the camera's built-in flash:

  • Risk of water-ingress and flooding via the strobe bulkhead is eliminated.
  • The camera's battery will last longer.
  • External strobes will fire in accordance with their quickest recycle time.
  • No inner reflections from camera's built-in flash.
  • Compared with slave TTL, the Optical YS Converter achieves far greater accuracy in TTL exposure/output.
  • Optical YS Converter is compatible with SLR cameras that do not have a built-in flash.


  • Power ON/Power OFF/TTL mode (indicated by blue lamp)/Manual mode (indicated by green lamp)
  • Remaining battery level is indicated by flashing LED lamp.
  • Auto Power Off:  The converter will automatically power off if the shutter lever or the mode switch is not activated for more than one hour.   The converter can be re-activated by pressing the mode switch.
  • Power Source 2 x AAA battery (Alkaline: 3.0V / Ni-MH: 2.4V)
    Alkaline: 15 hours / Mi-MH: 12 hours
  • Construction: Aluminum alloy (case)


54.4 x 39.5 x 53.3mm / 2.1 x 1.6 x 2.1 inches  (without cable)
Weight 154g / 5.4oz.

*  Optical YS Converters cannot be used with SEA&SEA housings not designed to incorporate them. Most, if not all SEA&SEA RDX and MDX series housings produced in the future will be compatible with an Optical YS Converter.