Nikon D750 Product Manual - Page 101
Power Aperture, Using an External Microphone, Headphones, See Also, Assign Fn button, Assign
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A Power Aperture Power aperture is not available with some lenses. Power aperture is available only in modes A and M and can not be used while photo shooting info is displayed (a 6 icon indicates that power aperture can not be used). A Using an External Microphone The optional stereo microphone can be used to record sound in stereo or to avoid recording focus noise and other sounds made by the lens (0 443). A Headphones Third-party headphones can be used. Note that high sound levels may result in high volume; particular care should be taken when headphones are used. A See Also For information on assigning power aperture to the Fn and Pv buttons, see Custom Settings g1 (Assign Fn button, 0 370) and g2 (Assign preview button, 0 372). The Fn button can be used to widen the aperture, the Pv button to narrow the aperture. 73
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