Nikon D5100 Reference Manual page 50

[] Night Vision ....................................................................................................
Use under conditions of darkness to
record monochrome images at high ISO
sensitivities (with some noise in the form
of randomly-spaced bright pixels, fog, or
lines). Autofocus is available in live view
only; manual focus can be used if the
camera is unable to focus. The built-in
flash and AF-assist illuminator turn offi use
of a tripod is recommended to reduce blur.
The camera detects and colors outlines for
a color sketch effect. Movies shot in this
mode play back like a slide show made up
of a series of stills. The effect can be
chosen during live view (_ 118); note that
the display refresh rate drops when live
view is in effect and that the frame rate
drops in continuous release mode.
Autofocus is not available during movie
recording.
Distant subjects appear as miniatures.
Miniature effect movies play back at high
speed, compressing 30 to 45 minutes of
footage shot at 1920 x 1080/30 fps into a
movie that plays back in about 3 minutes.
The effect can be chosen during live view
(_ 119); note that the display refresh rate
drops when live view is in effect and that
the frame rate drops in continuous release
mode. Sound is not recorded with movies;
autofocus is not available during movie
recording. The built-in flash and AF-assist
illuminator turn off; use of a tripod is
recommended when lighting is poor.
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