Homespun FF with Hard Stops

[reygun]

Just in from Lifehacker. LOL i think it's ghettolisciously effective :grin:
http://lifehacker.com/5813116/add-pro+level-focus-adjustment-to-your-dslr-with-a-simple-kit

 

[Blue Bomber]

What's that big clamp around the focus ring called, anyway?

 

[Matt Gottshalk]

Friction clamp.