Recommendations on cameras and lens for motorised focus manipulation via raspberry pi board?

[rasptian]

I am currently working on a distance detection system, and would like to demonstrate it's capabilities by coupling it to an optical system through a raspberry pi board. The proposed idea is to utilise the information from the distance detector to instruct the optical system on how to focus it's lens.

I note that some models of the raspberry pi cameras have adjustable focus, but they need to be adjusted by hand. I wish to fully automate the entire system, thus I am looking for a camera and lens combination with motorised focus capabilities. Does anyone have any suitable recommendations?

[marl_scot]

How about using a normal pi camera.
Take a small servo with a Uln2003 driver (approx £5.00).
Use 2 plastic gears, one attached to servo.
The other one, drill and file the centre to fit the focus ring on pi camera (https://www.raspberrypi.org/forums/view ... 37#p518476)
Mount servo so gears line up and then control it via GPIO.
See https://www.thingiverse.com/thing:1574661 for a good view of what the middle of the gear should look like, or even 3d print a custom gear.