JVC VN-C30U - Manual (Page 17)

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[Lens] control window
[Zoom] This setting controls zooming.
Change the value and click on the button to enable the
lens to zoom in or out.
[Focus] This setting controls focusing.
When it is set to [Auto], the focusing is adjusted automatically.
(Autofocusing)
When it is set to [Manual], the focusing position can be specified
as required. (Change the value on the right and click on the
button to set the lens to the specified focusing position.)
[Iris] When it is set to [Auto], the iris is adjusted automatically according
to the brightness of the object.
When it is set to [Manual], the iris can be set as required, regardless
of the brightness of the object. (Change the value on the right and
click on the button.)
03.10.17, 11:20 AM Page 17