The Nikon D100 digital camera allows only manual operation with any underwater strobe. Conversion circuitry to provide TTL operation is not available.

The new Manual Controller mounts on top of the handle and provides the choice of 10 power settings with the new digital SubStrobe DS models. Other strobe models from either Ikelite or Nikonos can be used, but not with the Manual Controller. Mount for Nikonos strobes is available.

Any Ikelite TTL sync cord can be used with the #6610 housing. Housings from other manufacturers may require a special sync cord or modification to the hot shoe.