Auto ZOOM

Hi all, just been setting up my tracker. not tested yet.
APM Flight Controller

I have a 30x zoom camera on the tracker (it has normal servo pwm input for zoom) and was wondering is there any way I could have an output from the FC to use the distance from base to auto zoom the camera?
Any ideas?

Thanks
Anthony

Hi Anthony,
I was looking the same application and found your post, did you get any sucess in adding a zoom control on your tracker ?