Marelux 51404 Zoom Gear for Canon EF 11-24mm f/4L USM diffuser It is not intended to

It is not intended to be attached to a housing and will provide no functionality if attached to a housing bulkhead

This package includes the valve and pump

New & Improved Color

This takes a little bit of getting used to but has the huge advantage that it will work with all phone models and does not rely on an app made by the housing manufacturer that might suddenly be removed from the app stores (as we've seen with other phone housing models)

Our new line of Action Housings are designed with water sports and travel in mind: built tough yet compact and lightweight

Marelux 51404 Zoom Gear for Canon EF 11-24mm f/4L USM diffuser It is not intended toZoom Gear for Canon EF 11 24mm F4L USM