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Focusing is done by means of a build-in
micrometer. This is located at the rear side of the camera and is protected by a
screwcap. The camera is precision focused in the factory. The
pre-adjusted micrometer reading assures that the camera is always perfectly
focused.
micrometer focusing
protected by screwcap
closeup of micrometer
When using filters it is quite easy to calculate the shift of focus by
measuring the thickness of the filter. This shift correction is
achieved by simply adjusting the micrometer.
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