Nikon D780 Reference Manual page 856

Filters
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Neutral Color (NC) filters can be used to protect the lens.
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The camera cannot be used with linear polarizing filters. Use the C-PL or
C-PLII circular polarizing filter instead.
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Filters may cause ghosting when the subject is framed against a bright
light, or when a bright light source is in the frame. Filters can be
removed if ghosting occurs.
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RGB and 3D-RGB matrix metering may not produce the desired results
with filters with exposure factors (filter factors) over 1× (Y44, Y48, Y52,
O56, R60, X0, X1, C-PL, ND2S, ND4, ND4S, ND8, ND8S, ND400, A2, A12,
B2, B8, B12); we suggest that [Center-weighted metering] be selected
instead. See the filter manual for details.
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Filters intended for special-effects photography may interfere with
autofocus or the electronic rangefinder.
Wireless Transmitters
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WT-7 Wireless Transmitter
wireless network or control the camera from a computer running Camera
Control Pro 2 (available separately). You can also take and browse pictures
remotely from a computer or smart device.
* Requires a wireless network and some basic network knowledge. Be
sure to update the wireless transmitter software to the latest version.
810 Technical Notes
*
: Use the WT-7 to upload pictures over a