This underwater housing is specially made for the Sony FX3 in combination with a Sony GM 16-35mm F2.8 or a Sony 24-105 GM F4. You can use it to dive up to 40m deep.
All buttons can be operated on the FX3 and you can also operate the zoom on the lenses. Focus is only via autofocus on the camera.
On the front is a 6" Dome which gives you a tight water line when you are half under and half above water.