D14041.02 January 2008 | TANDBERG FieldView Device User Guide |
4.5. Adjusting Zoom Levels
To adjust zoom levels, use the zoom buttons located above the
Navigation pad on the back of the FieldView Device.
•To adjust the zoom one step at a time, press and release the Minus
•To adjust zoom levels at a faster rate, press and hold the Minus or Plus button, and release it when the zoom level is where you need it.
The minimum focusing distance changes with the zoom level. As you zoom in, the minimum focus distance moves out. For example, if you are close to an object and zoom in on it, the object will become out of focus if you zoom in too far. The focus adjusts automatically when zooming unless the FieldView Device is in Manual Focus mode. See Focusing, next.
If you need to get very close to your subject, set the zoom level to 1× (minimum zoom) and move the FieldView Device until you reach the desired image size. This will ensure that you achieve the best focus.
4.6. Focusing
4.6.1. Automatic Focus
The FieldView Device normally operates in automatic focus mode and will focus on subjects centered in the viewfinder. Focus will continuously update as the distance between the subject and the lens changes or as zoom is adjusted.
There are situations where manual control is desired to fine tune the focus, particularly for objects not centered in the viewfinder. Manual focus control is described in the following section.
Note that zoom and focus controls are available regardless of whether the
Viewfinder is currently displayed.
4.6.2. Manual Focus
To set focus manually, the Operator can use the Plus/Minus buttons in combination with the Manual Focus (MF) button
Manual focus options |
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|
|
Switch to manual | While pressing and holding the MF button, press |
focus and increase or | and release a Plus or Minus button once. When |
decrease manual focus | you release the MF button, the FieldView Device |
by one step. | remains in manual focus mode, locked at the |
| focus level you set. |
|
|
Switch to manual | While pressing and holding the MF button, press |
focus and increase or | and hold a Plus or Minus button until you reach |
decrease manual focus | the setting you want. Then release the buttons. |
at a standard rate. | When you release the MF button, the FieldView |
| Device remains in manual focus mode, locked at |
| the focus level you set. |
|
|
Switch from manual | Press and release MF (without pressing Plus or |
focus to automatic | Minus). |
focus mode. |
|
|
|
Set a temporary focus | Press and hold MF (without pressing Plus or |
lock. | Minus). The focus stays locked for as long as |
| you continue to hold the MF button. Automatic |
| focus mode resumes when you release it. |
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