This is a special order item and is non-cancelable and non-returnable. Est. arrival at B&H is 2-4 weeks (subject to availability). Your order will be charged at time of shipment.
This Aquatica Nikonos Bulkhead (Replacement) can be used on the D90 and other recent Aquatica housings. The bulkhead allows you to attach a flash to an Aquatica housing with a Nikonos 5-pin sync cord. It gets connected to the Switchboard Circuit (#18915). The Switchboard Circuit has four 2 position switches. When all the switches are in the upper position, all 5 contacts are active, allowing you to use a TTL converter, or housed TTL compatible strobe when this is used as the main bulkhead. When the switches are in the lower position (default), only 2 contacts are active. So it will work in manual flash mode only. When used as a secondary bulkhead it is wired with only 2 contacts for manual strobe operation in order to avoid possible conflict with the camera's electronic circuit.