■ Main Features (* 1 )(* 2 )(* 3) outer diameter/length Φ 87.4 mm/43.4 mm Weight [Land/underwater] (land): 222g (underwater) Mounting Standard Mounting inon M55 practical water resistant depth 60 m body material/surface treatment 耐蝕 Aluminum Alloy Hard Anodized Black 硝材/surface treatment optical glass/less reflection coating lens structure 4 groups 4 pieces [underwater] (* 4) 100.0 ° Maximum shooting angle
(* 1) Ground when using the keratinous layer the images are available in four corners. Please do not occur the keratinous layer.
(* 2