SE90-F Focus Gear ~for Sony FE 90mm F2.8 Macro G OSS N120 Nauticam fiber optic cables have

Nauticam fiber optic cables have the highest light throughput of any optical cables on the market

An adapter to convert from an N100 port opening to N120 port opening for the Sony A7 system

for example

Depth Rating 150m Port System N100 Weight Port Opening Diameter Port Diameter Body Material Anodized Aluminum Alloy Port Material Port Coating Port Shade Material Removable Port Shade Spare O-ring 90141 split

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SE90-F Focus Gear ~for Sony FE 90mm F2.8 Macro G OSS N120 Nauticam fiber optic cables haveFocus gears allow access to the mechanical focus function of many lenses. Use of these gears may require specific port extensions and may not be available for all housings and lenses. This focus gear is specific for the Sony FE 90mm F2. 8 Macro G OSS lens.