Sea&Sea Extension Ring 46 with Focus Knob greenwaterfilter Shoe Base 1/4-20UNC Head

Shoe Base 1/4-20UNC Head

Snoot Tube

Different length of Optical D Cable products like Optical D Cable L Type L (68cm/27in) or Optical D Cable LL Type L (110cm/43in) expand application of strobe shooting such as off-camera strobe shooting

For example

Sea&Sea Extension Ring 46 with Focus Knob greenwaterfilter Shoe Base 1/4-20UNC HeadExtension Ring 46 with Focus Knob, provides manual focus for compatible zoom lenses. (Extension ring equipped with port lock). Compatible Housings: MDX series housings. Compatible Lenses: (as of June2014) Canon EF 16 35mm F2. 8L ll USM Canon EF17 40mm F4L USM Nikno AF S Nikkor 18 35mm F 3. 5 4. 5G ED Nikon AF S Nikkor 16 35mm F 4G ED VR * Compatible FC focus gear required for manual focusing (can be used in conjunction with a compatible zoom gear). *