A wide range of software solutions for various platforms and operating systems is presented.
Choose the lens control software that is most convenient for you and take full advantage of autofocus algorithms!
Also we have a simple API command set. You can use this protocol autonomously or embed it in your own software products.

We are grateful to the developers of third-party drivers for the ASCOM Canon Lens Controller Mark II.
Many thanks to Rodolphe Pineau (X2 plugins), USA and Christian Liska (INDI drivers), Austria!
Tools: MaximDL|FocusMax|SGP|PRISM|SharpCap|APT
Platforms: Windows XP/Vista/7/8/10
Author: astromechanics

Tools:  Ekos|KStar|Xephem|AstroImager|etc
Platforms:  Linux, BSD, MacOS
Author: Christian Liska

Tools:  TheSkyX
Platforms:  Windows, Linux, MacOS, Raspberry Pi
Author: Rodolphe Pineau

Tools: For internal FT232RL chip (vitrual COM port)
Platforms: Windows, Linux, MacOS, Raspberry Pi, etc
Author: astromechanics

Tools: Using a simple desktop utility
Platforms: Windows XP/Vista/7/8/10
Author: astromechanics
Tools: Using the ASCOM driver
Platforms: Windows XP/Vista/7/8/10
Author: astromechanics

User Manuals
These user manuals contain all the necessary information about assembling, connecting and working with
ASCOM Canon Lens Controller Mark II.
Tools: For a quick test and manual control
Platforms: Windows XP/Vista/7/8/10
Author: astromechanics

Tools: Communication protocol description
Platforms: Windows XP/Vista/7/8/10
Author: astromechanics

Lens Test Report
This information is collected both on our personal tests and on the reviews of our customers.
If your lens is not listed, this doesn't mean that it is not supported. We just don't have any feedback about it.
Thanks to all our customers for helping make the product better!
Tools: List of tested lenses
Platforms: Windows XP/Vista/7/8/10
Author: astromechanics

All prices are in US dollars. International payments we accept via PayPal.
Payment system supports MasterCard, Visa, Discover, American Express and eCheck.
Your package will be shipped within 5 business days after payment is completed. Average delivery time*:
EU countries: 8-15 days, US: 10-20 days, Australia: 10-16 days, Japan: 12-18 days.
For ordering information, please contact us via Skype or e-mail.
* In most cases
Didn't find a suitable adapter? Don't worry!
We can make a custom adapter of any thickness, with any thread and even according to your drawings!
Feel free to contact us. We will be happy to discuss the possibility of manufacturing your adapter.
ASCOM Canon Lens Controller Mark II
Native focus and iris control for Canon EF/EF-S lenses (Canon, Tamron, Sigma, etc).
The Product Family
* using optional flange
The filter can be installed in all spacers:
C/CS mount and one of the standard M42 x 0.75 mm spacers are designed for 1.25" mounted filters. These parts have an M28.5 x 0.6 internal thread.

Another one standard spacer can accept 36 mm unmounted filters (just a glass).
In addition it provides more clear aperture (34 mm vs 28 mm) and less vignetting.
New design!
All electronic components are installed directly in the adapter
Compact and highly-integrated solution without any external units
Full metal bayonet
without plastic parts
Rigid aluminum body (black anodized)
USB powered electronics
No external power supply required
Our products were originally developed for use in astronomy and astrophotography. Of course, it can also be used in other industries:
Machine Vision
Sorting & Inspection
Aerial Surveillance
Event Monitoring
Video Production
DIY Projects
Native control of focus and aperture using built-in motors
All electronic parts in one compact body
Rigid and reliable aluminum construction without plastic parts
Wide range of supported cameras with various mounts
Ability to install various optical filters (1.25", 2", 36 mm, etc)
Support for various software products (ASCOM, INDI, SkyX)
Simple desktop utility to quickly check lens performance
Lens API command set for easy integration
Custom adapters for your needs are possible
Let's get to know our family members closer!
Connection methods, detailed drawings, optional accessories, application notes and much more!
Just explore the controller you need.
9.5 mm spacer (1.25") - 20$
9.5 mm spacer (36 mm) - 30$
9.5 mm c-mount (1.25") - 20$
14.5 mm cs-mount (1.25") - 20$
ASI6200MC/2600MC flange - 45$
ASI071MC/094MC flange - 45$
Set of thin shims for QHY - 10$
(Does not require any accessories)
(Does not require any accessories,
the flange is included in the base kit)
(Does not require any accessories)
(Does not require any accessories)
(Does not require any accessories)
You can suggest your own version of the adapter for your camera.

We will be glad to consider the possibility of its production.