Nikon D300 - Dust off Ref Photo; Usb

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U
USB
Choose a USB option for connection to a computer or PictBridge
printer.
Choose [MTP/PTP] (the default setting) when connecting
to a PictBridge printer or an optional WT-4 wireless transmitter or
when using Camera Control Pro 2 (available separately; see page
368).
See page 225 for information on selecting a USB option for
use with Nikon Transfer.
Dust off Ref Photo
Acquire reference data for the Image Dust Off option in
Capture NX version 1.3.5 or later or Capture NX 2 version 2.1.0 or
later (available separately; for more information, see the software
manual).
[Dust off ref photo] is available only when a CPU lens is mounted
on the camera.
A lens with a focal length of at least 50 mm is
recommended.
When using a zoom lens, zoom all the way in.