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The Carbon Telescopic Arm is composed of two or three arm sections that allow you to have any desired length easily and quickly by loosening/tightening lock dial only at half turn
Spare O-rings
Look for filters that attach to your lens prior to installation
(*7) "New generation" NiMH batteries carrying less self-discharging and heat generating characteristic comparing to "conventional" or " high-capacity" NiMH including listed batteries as below confirmed compatible by INON INC
Quick Shoe W50 Clamp or Quick Shoe Main Base
Sea&Sea FC Focus Gear for Canon EF 17-40mm f/4L USM Lens #bestsellers The Carbon Telescopic Arm isThis focus gear enables manual focus adjustment for the Canon EF 17 40mm f 4L USM lens via the Extension Ring 46 with Focus Knob #30117 when used with Sea&Sea MDX series 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 28cm 11 inches. * When you shoot fast moving
