SmallRig F40 Mini Follow Focus

Get complete control over your lens focus with the SmallRig F40 Mini Follow Focus—a compact, professional-grade tool designed for precision filmmakers and videographers using DSLR or mirrorless camera rigs.

This modular system features smooth fluid damping, dual A/B hard stops, and an adjustable lens gear ring, making it ideal for fast-paced shoots and creative rack focusing. It mounts easily to a 15mm rod system using the included NATO-compatible rail clamp.

Key Features:

• Precision Focus Knob: Smooth, fluid damping for accurate manual focus.

• A/B Hard Stops: Set focus points for controlled, repeatable pulls.

• Gear Compatibility: Includes a 0.8 MOD/43T gear with support for multiple ring sizes.

• Lens Gear Ring: Adjustable belt-style ring fits a wide range of lenses.

• Mounting Options: Attaches via 15mm rod + NATO rail support.

• Anti-Slip Design: Focus knob resists sweat and moisture during long shoots.

• Marking Disk: Includes replaceable ring for labeling focus points.

• Protective Case: Comes in a durable carry case for easy storage and travel.

What’s Included:

• F40 Follow Focus unit

• 15mm rod (3.9")

• 0.8 MOD/43T gear

• Adjustable focus gear ring

• Marking ring

• Carry case

Compatible With:

• Standard 15mm rods

• NATO rail systems

• SmallRig 0.8 MOD gear wheels: 3200 (65T), 3285 (38T)

• SmallRig Seamless Focus Rings: Φ62.5–83mm

• Tie-style gear ring up to Φ114mm lenses

• Focus whips & joysticks

Whether you’re using cinema primes or photo lenses, the F40 Mini adapts quickly and packs compact for mobile, on-the-go content creation.