LONG-AWAITED Extension ring for Sea Frogs SONY A7III - A7RIII / A7RIV / A9 housings - SONY 70-200mm F4 lens available NOW!
This extension ring with inbuild zoom gear was created to extend the possibilities of your housing with SONY 70-200mm F4 lens.
It can be simply attached between housing and standard flat port to transform your setup to be compatible with SONY 70-200mm F4 lens.
The application of aluminium handle included in the package for correct force & weight distribution. It also prevents the unlock of the standard port and also for comfortable handling and caring.
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