Sea & Sea SS-30117 Extension Ring 46 with Focus Knob

In Stock $630.00
Sea & Sea SS-30117 Extension Ring 46 with Focus Knob
Provides manual focus for compatible zoom lenses.
This product is the ideal solution when you shoot fast-moving subjects (which even the latest auto focus may not follow) or when you shoot in dark environments and when there are lots of particles suspended in the water; all situations where auto focus will not function correctly. The focus knob is located in an ideal position and angle to be easily operated with the index finger and thumb.

Compatible with MDX series housings and Canon EF 16-35mm F2.8L ll USM, Canon EF 17-40mm F4L USM, AF-S Nikkor 18-35mm F/3.5-4.5G ED, AF-S Nikkor 16-35mm F/4G ED VR lenses.