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10_
Installation and Connection
Adjusting the back focus
The back focus of the camera is adjusted at the factory before delivery but some lenses can
be out of focus depending on the lens type. In this case, you have to adjust the back focus.
The following describes how to adjust the back focus of the lenses.
In case of the lens with no zooming function
1
After exposing the camera to an object with high resolution (like a dart-patterned image)
at a distance of more than 10m, set the lens focus ring to infinite (
∞
).
2
Adjust the Back Focus Control Bar until the object is of best quality.
3
Fix the screw of the Back Focus Control Bar.
In case of the lens with zooming function
1
After exposing the camera to an object with high resolution (like a dart-patterned image)
at a distance of 3 to 5m, fully rotate the lens zoom to the TELE direction.
Then adjust the lens focus ring until the object is of best quality.
2
Fully rotate the lens zoom to the WIDE direction and adjust the Back Focus Control Bar
until the object is of best quality.
3
Repeat step 1 and 2 two or three times until the focuses of Zoom TELE and Zoom WIDE
are clear enough.
EU-B2315-ENG.indd 10
2008-07-14 오후 3:23:50
Содержание SNC-B2315
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