Firefly DE550/551 User Manual Version: 3.3
Using Focus:
Based on the relative distance of the observed object, the focus wheel can be turned for a clear image.
When a higher magnification is required, the focus wheel can be turned to the left (see below). If a
larger field of view is required, the otoscope can be moved farther away and the wheel turned to the
right.
Default Position: Match “50” to the triangular marker
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