Ikelite 5509.27 Zoom and Focus Gear Set AOI When the camera's built-in flash

When the camera's built-in flash is used to trigger external strobes the mask around the lens will block the light from the flash which then prevents internal reflection off the front of your dome lens port

and most Ikelite video housings

Colour Temperature with Diffuser: 5250K

Aquatica Zoom Gear #48731 for Tokina AT-X 10-17mm f/3

This filter is available as a threaded

Ikelite 5509.27 Zoom and Focus Gear Set AOI When the camera's built-in flashIkelite 5509. 27 Universal DSLR Zoom Gear for Lenses up to 2. 8 inch Product Details Ikelite's unique universal zoom sleeve and lens clamp set works with most lenses up to 2. 8 inch (7. 1 cm) diameter. Usable in most Modular and Fixed DSLR Lens Ports. The most universal and affordable zoom gearing system in the industry. Special Order Product 1 2 weeks delivery.