A full featured and durable waterproof housing for Nikon D750 DSLR cameras. Suitable for scuba, snorkel, surf, pool and any application in or around the water. This popular model has been redesigned from the ground up to include all of our latest improvements. Lens Ports The single most important feature is our long awaited new Dry Lock (DL) port system. This exciting new system is even more robust and even easier to assemble than our time-tested Four Lock (FL) system. The new ports are lighter and more adaptable and can accommodate extremely large diameter lenses with ease. If you're considering shooting professional quality lenses like the Nikon 14-24mm or Sigma 10-20mm HSM, then the DL system is essential. Most popular zoom lenses and select lens focus rings can be engaged using a simple yet effective gearing system that puts adjustment right at your fingertips. A large, soft-touch lobed knob on the side of the housing makes fine tuned adjustments a breeze. Zoom and focus gears differ depending on which lens you are using. All are lightweight and affordable. Using Legacy FL (Four Lock) Lens Ports Due to differences in mount diameter and zoom engagement, DL and FL system ports cannot be used interchangeably. The DL port mount may be removed and replaced with old style Port Locks for FL Port System (Set of 4) # 5509.04 for legacy users with standard or modular ports from our Four Lock system. This modification will prevent th