Howshot Zoom Gear for Canon EF 11-24mm f/4L USM Lens on Sea&Sea Housings @m67thread The adapter is designed for

The adapter is designed for underwater use for superior durability and corrosion resistant characteristic

215 minutes [Alkaline battery at LOW]

The rated practical burn time (*) with eneloop pro (BK-3HCC) rechargeable batteries

Compatible Light:

usable range of DoF (depth of field) with this lens is "1cm/0

Howshot Zoom Gear for Canon EF 11-24mm f/4L USM Lens on Sea&Sea Housings @m67thread The adapter is designed forHowshot zoom gear enables zooming for the Canon EF 11 24mm f 4L USM lens via the housing's focus zoom knob when used with Sea&Sea MDX series and RDX series housing. * Zoom is controllable with the focus knob on the housing. (main body) * Manual focus cannot be used.