N200 8.5'' Acrylic Wide-Angle Dome Port Tokina provide the best light transmission

provide the best light transmission and therefore more accurate TTL of any fiber optic cable on the market

This focus gear is specific for the Canon EF 8-15mm f/4L Fisheye USM lens

It fits perfectly into the supported housings

8-4DC Macro lens

This zoom gear is for the Sigma 12-24mm F4 DG HSM | Art lens

N200 8.5'' Acrylic Wide-Angle Dome Port Tokina provide the best light transmissionThis 8. 5" wide angle dome port is part of the N200 port system and features an acrylic element, anodized aluminum construction and an integrated aluminum port shade. Different size ports are available to support a wide variety of lenses and housing types. Port extensions or adapters may be necessary for some ports and housings. Technical Specifications Depth Rating 100m Port System N200 Weight Port Opening Diameter Port Diameter 8. 5" Body Material