O-Focus DM Cine PRO Kit
I'm crazy about the O-Focus DM. The transmission of the Cine Handwheel is ideal. Up to now, every other more expensive system had some amount of play but the O-Focus has none. This is how OConnor won me over.
Product Specification
O-Focus Dual Mini
Designed to meet the exacting needs of professional camera operators and assistants, the OConnor O-Focus Dual Mini is a compact, double-sided direct drive follow focus unit optimized for both still and cine-style camera lenses.
The precision gear drive of the main bridge is designed with a gear ratio of 1:0.75 so that 360 degrees of input (rotation of the handwheel) results in 270 degrees of output (rotation of the drive gear). Two versions of the O-Focus DM, the Photo Set and the Cine Set, utilize different handwheels to apply a unique transmission output in order to optimize rotation for the relevant lens type.
O-Focus DM Cine Set
The Cine Set utilizes the existing CFF-1 Studio Handwheel and has a transmission ratio of 1:1.8 (input:output). When coupled with the O-Focus Bridge it yields a 1:1.4 output transmission ratio well suited for cine lenses with an expanded focus scale.
The Studio Handwheel is offset, meaning it has 360 degree rotation for optimum placement and view of lens witness marks, and allows the camera to be set on the ground without the rig weight resting on the handwheel.
Main Features
The modular design of the O-Focus DM enables operators who want to transition between Photo and Cine lenses to optimize the transmission ratio to suit simply by swapping out the handwheel(s) – no tools required.
Both versions of the O-Focus DM feature extremely low profiles, which allow use with large diameter lenses. The sliding dovetail design provides adjustment for various lens sizes, even those with very large lens barrel diameters. Additionally, tapered flank couplings (pioneered with the OConnor CFF-1) eliminate play between the handwheel and bridge connection.
The O-Focus DM integrates seamlessly with existing follow focus accessories including whips, cranks and gears. It also shares many of the OConnor CFF-1 accessories, such as the Studio Handwheel and Marking Discs, Handwheel Extension and Studio 15/19mm Bridge. The new Toothless Friction Driver, for the use of still lenses, eliminates much of the need for additional toothed gear rings.
- Extremely low profile double sided bridge design
- Direct drive gear box with no swing arm
- Adjustable via sliding dovetail to various lens diameters
- Compatible with large lens barrel diameters
- Photo set yields industry first 1:0.75 gear ratio for photo lenses
- Modular design enables gear ratio to be optimized through swap out handwheels
How it Compares with the CFF-1:
The O-Focus DM Cine Set shares a number of features with the CFF-1, but is a smaller unit with a direct drive gear mechanism and 1:1.4 transmission ratio, versus 1:1.84 for the CFF-1.
Shared Features with the CFF-1:
- Extremely low profile double sided bridge design
- Low profile bridge
- Interchangeable studio / LWS bridge
- Interchangeable knobs, knob extensions and gears
- Interchangeable marking discs
- Offset handwheel
- Standard whip / crank coupling
Differentiating Features from the CFF-1:
- Gear ratio / Lens optimization
- Direct drive vs. swing arm
- Physical size
Modular Cine Follow Focus system for 15mm LWS rods
Key Features
Double sided LWS follow focus
Studio handwheel taken from the CFF-1 generates a transmission output of 1:1.8, optimised for cine lenses.
Handwheel interchangeable with the Photo Set hard stop handwheel [available to purchase separately] to optimise the follow focus for photo lenses – no tools required!
Product Video
Photo Gallery
Recommended Lens & Camera Accessory Parts
CFF-1 Studio Hand wheel
Conical Marking discs
Driver Gear 35 tooth 0.8M 10mm face (Cine)
Driver Gear 43 tooth 0.8M 6mm face (Cine)
Driver Gear 50 tooth 0.6M 7.5mm face (Fujinon ENG focus)
Driver Gear 60 tooth 0.5M 7.5mm face (Canon ENG focus)
Flat Studio Marking discs
Flat Studio Marking discs glow in the dark
Friction Driver
Handwheel Extension
LWS Rod Bridge 15mm
O-Focus Hard Stop Handwheel
Flexible Drive Shaft Assembly
Flixible Drive Shaft
Speed Crank
Peli Storm Case with Custom Foam Inserts
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