Sea & Sea Optical YS Converter/C1 for Canon MDX housings

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Sea & Sea Optical YS Converter/C1 for MDX housings

Sea & Sea Optical YS Converter/C1 for MDX 70D/80D and MDX 5DMKIII/IV

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 SEA&SEA strobe(s) with Fiber-Optic Cable(s) (*). TTL and manual modes can be switched by pushing the mode switch on the housing.

Compatible housing: MDX-5D Mark III ver.2 (with Canon EOS 5D Mark lll) MDX-5D Marik IV, MDX-70D and MDX-80D

* SEA&SEA's Fiber-Optic Cable II must be used with an Optical YS Converter.


  • Controls: 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) [Power Source] (*1) Alkaline: 15 hours / Mi-MH: 12 hours (*2)
  • Construction: Aluminum alloy (case)
  • Dimensions (WxHxD): 54.4 x 39.5 x 53.3mm / 2.1 x 1.6 x 2.1 inches (without cable)
  • Weight: 54g / 1.9oz.

*1 Operating time depends on the battery brand, temperature and frequency of use.

*2 Operating time tested on 750 mAh batteries.

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