17
Flange-back Adjustment
The adjustment is required only when a lens without
focus-adjusting mechanism is mounted, or when a lens
with adjusting mechanism is mounted and focus that is
more accurate is needed.
Use the flange-back adjusting ring to obtain a focused
point while watching the monitor screen.
Note:
The object may be out of focus when using a source of
near-infrared light than using the visible light.