Nikon D300 User Manual page 84

II The JPE6CompressionMenu
The [JPEG compression] item in the shooting menu offers the
following options for JPEG images:
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Size priority Images are compressed to produce relatively
uniform file size. Quality varies with scene
"'; (default)
recorded.
Optimal image quality. File size varies with
t Optimal quality
;;; scene recorded.
II TheNEF(RAW)Recording Menu: Type
The [NEF (RAW) recording] > [Type] item in the shooting menu
offers the following compression options for NEF (RAW) images:
Option " Description
Lossless NEF images are compressed using a reversible
OH__.compressed algorithm, reducing file size by about 20-40%
(default) with no effect on image quality.
NEF images are compressed using a non-
OH_ Compressed reversible algorithm, reducing file size by about
40-55% with almost no effect on image quality.
Uncompressed NEF images are not compressed.
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