The F40 mini Follow Focus from SmallRig is an adjustable, manual follow focus that mounts to the left side of your lens. It features a fluid focus knob that ensures smooth focus control and precision with its adjustable A/B hard stops and is easily mounted using the included 15mm rod clamp with NATO rail. It also includes a 3.9" 15mm rod, a 0.8 MOD/43T gear, and an adjustable, belt-style focus gear ring.

The anti-slip and anti-sweat focus knob prevents moisture build-up and provides comfortable dampening control. The belt-style lens gear ring wraps around the lens, and different-size gear rings with different gear teeth measurements may be utilized. A replaceable marking ring is included in the package, as well as a hard carry case for the follow focus components.

Lightweight, Compact Follow Focus    3.94" 15mm Rod & Rod Clamp are Included    Adjustable A/B Hard Stops    Adjustable Focus Gear Ring, 0.8 MOD Gear    Interchangeable Gears & Focus Gear Rings    Anti-Slip Focus Knob    Designed for Left-Side Use    Replaceable Marking Ring

• Standard 15mm rod
• NATO rail accessories
• Standard 0.8 MOD lens and focus gear rings
• SmallRig 0.8 MOD / 65T gear 3200
• SmallRig 0.8 MOD / 43T gear
• SmallRig 0.8 MOD / 38T gear 3285
• SmallRig Φ62.5-64.5 Seamless Focus Gear Ring 3291
• SmallRig Φ66-68 Seamless Focus Gear Ring 3292
• SmallRig Φ72-74 Seamless Focus Gear Ring 3293
• SmallRig Φ75-77 Seamless Focus Gear Ring 3294
• SmallRig Φ78-80 Seamless Focus Gear Ring 3295
• SmallRig Φ81-83 Seamless Focus Gear Ring 3296
• SmallRig Tie-style focus gear ring supports lens diameter up to Φ114mm
• SmallRig Standard joystick and focus whip

Related Questions and Answers

Q: 1. Can the follow focus also be used to control the zoom on a zoom lens?

A: Yes, the SmallRig F60 Modular Follow Focus can be used to adjust the focus, zoom, and the aperture of a lens.

Q: 2. Does anyone know the length of the small 15mm rod that comes with? Trying to determine if it's long enough to reach the focus ring on my lenses if I'm not using a rail system. Thanks!

A: The 15mm included rod is 4 inches.

Q: 3. Can I control the zoom ring with the follow focus?

A: Yes, while the SmallRig F40 Mini Follow Focus and Mini Matte Box Kit is made to control focus we see no reason why it could not be used to control zoom.

Q: 4. Is this compatible with the (sigma 18-35mm f1.8)?

A: Yes, it would. When using a follow focus your lens must have compatible gears. To add gears to your Sigma 18-35mm focus ring please purchase the seamless gear ring listed below or use the included Zip gear that comes included with the Smallrig Mini follow focus. Recommended - SmallRig Seamless Focus Gear Ring (75 to 77mm) BH #SM3294 https://bhpho.to/3Y4NmBn

Q: 5. Is the focusing gear reversible to the opposite side, so you can have opposite function?

A: No, this does not reverse the wheels. Nikkor lens shooters will have to look elsewhere.

Q: 6. Will this work on my Z6 using the SmallRig Cage for Nikon Z7/Z6/Z5 Camera only or will I need something else?

A: This follow focus mounts to15mm Rods. Some kits for cages include a baseplate and rods but chances are you will need to purchase them separately. Here is an example of a baseplate SmallRig Universal 15mm LWS Support Baseplate with Quick Release Plate B&H # SM2092B MFR # 2092B and rods SmallRig 15mm Aluminum Rod (Pair, Black, 8") B&H # SM1051 MFR # 1051

Q: 7. Does the Lumix 24-70mm have 0.8 focus gears?

A: NO IT DOES NOT

Q: 8. Is this compatible with the Rokinon Cine DS lenses?

A: yes it is compatible with all lenses with standard 0.8 focus gears

Q: 9. Can you reverse the gear? Right now I turn the wheel away from me, and focus becomes closer. I'd like the opposite to happen....

A: It does not look like that is possible, but I would recommend mounting the follow focus upside down with a 15mm rod that is on top of the lens rather than on the bottom.

Q: 10. Is there a way to use this without a rig of any kind?

A: No there is not. It needs to be mounted to a 15mm Rod. You do not need to build a complicated rig but you will at least need some form of baseplate and 15mm Rod.