Sony E Mount Caps Front And Rear
Related Faq
Q
Will this work for a nikon f-mount (d3300) to sony e-mount? ( a7iii)
A
it could work with a nikon f-mount (d3300) to sony e-mount( a7iii). 
Q
Is it compatible with sony a7iii??
A
Yes, it will fit any Sony e mount body, either full frame (a7..., a9...), or aps-c (like a6500, etc) 
Q
Is there a open skeleton frame to use the external microphone?
A
The V50x comes with a skeleton case with a slotted rear door replacement, but there is no opening to allow plugging in an external mic. As a note, the sound recording, even while in the completely waterproof case, is better than I had expected. If you're not worried about moisture, there is a threaded tripod mount on the bottom of the camera and an adapter that will allow you mount the camera without using the case. 
Q
Will this work on an a7iii? It wasn't listed.
A
Yes, the A7III is an E Mount lens mount. 
Q
Is the front of the lens threaded to accept a lens cap, another filter or hood?
A
Yes, just as any filter I have, they all accept manufacturers and after markets caps and more can be threaded on in front and behind. No loose band. Well built. 
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