The following is information regarding compatible ports for the Canon EF8-15mm F4L Fisheye USM zoom lens. Compatible zoom gear for the Canon EF8-15mm F4L Fisheye USM is zoom gear #31154.

For MDX series housings for Canon full-frame sensor cameras, such as the MDX-PRO 5D Mark ll
・NX Compact Dome Port (#56601)
・Optical Dome Port (#30104)
・Fisheye Dome Port 240 (#30116)
* No extension ring is required.
* When the lens is used at the widest angle (focal length of 8mm) the dome shades can be seen in the field-of-view, be sure to remove the shades.
* NX Fisheye Dome Port (#56401) can be used only when the lens is used as 15mm as the shades of the port cannot be detached.
* Optical characteristics: Image aberration is rarely apparent for the above listed ports.

For MDX series housings for Canon APS-C (crop sensor) cameras such as the MDX-7D and MDX-40D
・NX Compact Dome Port (#56601)
・Optical Dome Port (#30104)
・Fisheye Dome Port 240 (#30116)
・NX Fisheye Dome Port (#56401)
* No extension ring is required.
* Optical characteristics: Image aberration is rarely apparent for all the above ports.

For RDX series housings for Canon APS-C (crop frame) cameras such as the RDX-600D/550D
・RDX Port Base L (#30109) + NX Compact Dome Port (#56601)
・RDX Port Base L (#30109) + Optical Dome Port (#30104)
・RDX Port Base S (#30108) + CX Compact Dome Port (#46100)
* Optical characteristics: Image aberration is rarely apparent for the above listed ports