Bosch EX49N Installation Instructions Manual page 24

Conical no-grip dome camera

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Use a Neutral Density filter or Infra-Red Pass filter to cover

the lens during focusing to simulate low light conditions on

scene for correct 24-hour focusing. For camera with vari-

focal lens, the camera should be focused with the lens iris

fully opened to simulate the worst possible depth of field.

Using a Neutral Density filter or Infra-Red Pass filter will

ensure the iris is fully open for correct setup and adjustment.

Note that statement above is applicable only for Day/Night or

IR version cameras.

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Ex49mnx803ac-n Ex49