Sea&Sea Focus Gear for Canon EF 8-15mm f/4L Fisheye USM Lens @compacthousing Optional two viewfinders provide bright

Optional two viewfinders provide bright and clear finder image

Weight: [air] 76 g/2

Howshot Spare 32650 Li-Ion Battery (5

Weight: 90g / 3 oz

requiring more than ever from a lighting system

Sea&Sea Focus Gear for Canon EF 8-15mm f/4L Fisheye USM Lens @compacthousing Optional two viewfinders provide brightThis focus gear enables manual focus adjustment for the Canon EF 8 15mm f 4L Fisheye USM lens via the housing's focus zoom knob when used with Sea&Sea dSLR housings. The focus gear is useful in the following situations: * When you need to manually adjust focus as your subject is not situated within the AF frame or in order to maximize the effect of the lenss minimal shooting distance of 15cm 5. 9 inches. * When you shoot fast moving subjects, like