DIY Manual Focus Rings
- 1). Drill a hole in the hose clamp that is slightly smaller than the width of the bolt.
- 2). Insert the tip of the bolt into the hole and screw on the nut to tighten the assembly.
- 3). Loosen the hose clamp and place it on the focus ring of your camera.
- 4). Tighten the hose clamp until it fits snugly, but not real tightly, on the lens. Once tightened, gently pull the bolt handle to rotate the camera's focus ring.