I found myself wanting some timelapses of long running prints, so I turned to OctoPrint.
After mounting the camera, I found myself with the dilemma of the auto focus.
I could not find enough information in one place, and not being one to back away from a fight- I started a pot of coffee (which turned into 3 by the end of it) and started digging- these are my findings, so your mileage may vary.
Install uvcdynctrl with: sudo apt-get install uvcdynctrl
using the command: uvcdynctrl --device=video0 --set="enter your parameter here" your numerical value
example: uvcdynctrl --device=video0 --set="Sharpness" 255
I found a list of adjustable parameters by running: uvcdynctrl -c
Back to the auto zoom dilemma- I first had to disable it to use the manual zoom
uvcdynctrl --device=video0 --set="Focus, Auto" 0
disabled the auto focus, then
uvcdynctrl --device=video0 --set="Focus" 18
to start finding the right value for my situation
More info can be found at: http://www.linux-commands-examples.com/uvcdynctrl