So, about one month later, the varifocal lens is here! And it is actually quite light, making me self-doubt my decision not to get the much bigger (but more expensive) lens. Initial testing on the Works PC looks good but the focusing is very tight, just like those CCTV cameras. If you turn the lens a smidgen, it will lose focus.
I have to do this very carefully so as not to destroy the M12 mount which looks plasticky and fragile.
I do not want to close it either since I think, the microphone might be less sensitive.
Anyway, with the Webcam rig set up, it is only a matter of time before I can fully test it. I have to wait for the whole house to be asleep as through experience, the mic will definitely pickup far away sounds except for the human voice in front of it. Oh well, I hope this is not true when I get to test it out. But I can tell you, I do not like how my voice sounds.
I hope to test this soon.