Specify the default focus-distance tolerance.

Arguments:

Double tolerance

The desired tolerance of the focus distance in millimeters.

Example:

The following example tells subsequent invokations of the focus command to attempt to set the optimal focus position to within 0.5 mm.

 focus_tolerance 0.5

Context:

The focus drive is an imprecise mechanism with significant backlash. This command sets the precision by which the focus command attempts to set the focus position. A reasonable value is around 0.5mm. Smaller values than this may result in positioning failures, due to backlash.