Nikon D5100 Reference Manual page 25

Create a cropped copy of the selected photograph. The
selected photograph is displayed with the selected crop shown
in yellow; create a cropped copy as described in the following
table.
Increase size of crop
Reduce size of crop
Change crop aspect
ratio
Move crop
Create copy
Description
button to increase the size of the crop.
Press the ql_ button to reduce the size of the crop.
Rotate the command dial to switch between aspect ratios of
3:2,4:3,5:4,1:1,and16:9.
Use multi selector to move the crop to another area of the
image.
Save the current crop as a separate file.
[] Trim; Image Quality and Size
Copies created from NEF (RAW) or NEF (RAW) + JPEG photos have an
image quality of JPEG fine (_ 47); cropped copies created from JPEG
3hotos have the same image quality as the original. The size of the
copy varies with crop size and aspect ratio and appears at upper left
in the crop display.
[] Viewing Cropped Copies
Playback zoom may not be available when cropped copies are displayed.
Copy photographs in Black-and-white, Sepia, or
Cyanotype (blue and white monochrome).
Selecting Sepia or Cyanotype displays a preview
of the selected image; press • to increase color
saturation, • to decrease. Press _) to create a
monochrome copy.
increase
saturation
Decrease
saturation
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