EF Lens Control

EF Lens Controller

(Product ID: Controller: LC-2, Adapters: LC-2A-XXX)

Add EF/EF-S lens control to any camera.  The EF Lens Controller is a two-piece control system designed to operate the motorized features of most Canon® (USM), Sigma® (HSM) and Tamron® (USD) EF/EF-S lenses including L series and both APS-C and full-frame models, with and without image stabilization.  A control box (LC-2) houses the control board and an Ethernet interface allowing the device to be operated over long distances.  A separate adapter (LC-2A-***) connects the lens to the control box via a cable and locking connector.    


  • Accurate and repeatable control of Focus, and Aperture (Iris)
  • Image stabilization control (IS for Canon®, OS for Sigma® and VC for Tamron®)
  • Auto-detection of attached lens and F-number stops with included lens adapter
  • Read current zoom position (for zoom lens)
  • Lens drift compensation
  • 10/100Mbps Ethernet interface
  • Field-updatable firmware (via Ethernet)
  • Supports ARP stuffing (for remote IP set)
  • Multiple controllers can be connected and simultaneously controlled over a network
  • Demo Windows lens control application
  • Human-readable (ASCII-based) API command set for integration (LabVIEW, Python, Perl, etc. examples)
  • Programmable preset capability to easily store and recall saved focus/aperture positions on the lens
  • Lens adapters for many camera mounts available


LC-2 Controller C-mount Lens Adapter M42-mount Lens Adapter T-mount Lens Adapter T-mount Lens Adapter (Thin) M58-mount Lens Adapter

Note: Adapters pictured without cord


  • Machine Vision Systems
  • Aerial Surveillance Systems
  • Sorting Systems
  • Inspection Systems
  • Event Monitoring Systems
  • Video Production
  • Astrophotography and Astronomy

Pairing a Lens Adapters to a Camera

In order for infinity focus with EF lenses, the flange focal distance of 44.0 mm must be maintained.  Flange focal distance is the distance from the lens mounting flange to the sensor image plane.  Drawings below in the CAD Drawings section show the thickness of each adapter (“B”).  Camera datasheets will specify back focal distance (“A”) in their mechanical drawings.

Custom solutions are available.  Please call us to discuss.

Ordering Information:

Package consists of LC-2 control box and one lens adapter.  Specify lens adapter type (C-, M42-, M58 or T-mount).

Control Box: LC-2

Adapter: LC-2A-C (EF to c-mount lens adapter), LC-2A-M42 (EF to M42x1 lens adapter), LC-2A-T (EF to M42x0.75 lens adapter), LC-2A-T18 (EF to M42x0.75 lens adapter), LC-2A-M58-75 (EF to M58x0.75 lens adapter)

Optional Accessories: Extension cable to extend distance between LC-2 and LC-2A

Carrying case also available.


EF Lens Controller (LC-2) Datasheet.pdf

EF Lens Controller (LC-2) User Manual.pdf

EF Lens Controller Catalog.pdf

EF Lens Controller (LC-2) API Programming Reference.pdf

User Interface: v1.4.3 Windows (32/64 bit)

Firmware (For LC-2 with serial number 16XXX): v1.8.2

Firmware (For LC-2 with serial number 17XXX): v1.8.2_new

Canon Lens Controller GUI Canon Lens Conttroler

Tested Lenses

The LC-2 and lens adapters are designed and made in the U.S.A. right here in our production facility in Dayton, OH.

EU Declaration of Conformity.pdf

For ordering information please contact our sales department: [email protected] or call us at (937) 630-3012

For technical support, please contact our support department: [email protected] or call us at (937) 630-3012