02-17-2013, 05:53 PM
Interesting little project there Greg. Are there any bearings under those hex nuts, and is there going to be any sort of backlash take-up? When follow-focusing with a camera lens, any slop can cause a momentary out of focus condition. It appears that you'll have about a 4:1 increase or reduction in rotational movement between the input and output shafts. Which is which? What kind of camera and application is this to be used for?