Syncing viewport and vray output

[gnome_mo]

Hello guys.
I'm new to V-ray,sorry in advance for noob question.
I've find that I have a problem rendering small spaces, bathroom for example.
Field of view doesn't really work for me, so I tried overriding focal length in V-ray Options---Camera. That works , but problem is, I never know what my final render will be.
My question is, can I somehow sync my viewport scene with my V-ray camera settings, not only Aspect Ratio (figured that one out - V-Ray Tools²), but focal length too? Or Zoom factor? Or film width?Anything that would allow me to see my rendered scene in advance in viewport.
English is not my first language, sorry if my post is confusing.

Viewport:

Rendered image:

Physical camera V-ray settings: