ASTROMECHANICS ASCOM Canon Lens Controller Mark II Podręcznik - Strona 9
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TROUBLESHOOTING: no focus or aperture control
Make sure you attach the lens correctly. Rotate the lens clockwise until it locks (you can hear a slight
click). For adapter without a lock mechanism: turn the lens until it stops (the bayonet's petal will
prevent it from scrolling further than the correct position);
Make sure you are using the correct lens. Only M42x0.75 mm adapter for ASP-C cameras
mechanically supports EF-S lenses. Other adapters (M54x0.75 mm, QSI WS, Moravian G4, FLI) only
support EF lenses;
Try cleaning spring-loaded electrical contacts with alcohol or gasoline;
Check the adapter connection. During the initial test, it is recommended to use a direct connection
to a computer or an active USB hub;
Try changing the USB cable. For testing purposes, you can use a shorter cable, for example 0.25 m.
The length of the supplied cable is 0.5 or 1 m;
Make sure the AF/MF switch is set to AF;
Check that you have selected the correct com port in the program settings when connecting to the
device.
If the lens doesn't respond to commands at all or only one function works (focusing or aperture control),
please contact us and describe your case. You can find the current list of tested lenses here. 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!