Nikon D3 - Manual (Page 94)

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❚❚The NEF (RAW) Recording Menu: Type
The [NEF (RAW) recording] > [Type] item in the shooting menu
offers the following compression options for NEF (RAW) images:
❚❚The NEF (RAW) Recording Menu: NEF (RAW) Bit Depth
The [NEF (RAW) recording] > [NEF (RAW) bit depth] item in the
shooting menu offers the following bit-depth options for NEF
(RAW) images:
Option Description
N
Lossless
compressed
(default) NEF images are compressed using a reversible
algorithm, reducing file size by about 20–40%
percent with no effect on image quality.
O Compressed
NEF images are compressed using a non-
reversible algorithm, reducing file size by about
40–55% percent with almost no effect on image
quality.
Uncompressed
NEF images are not compressed. Recording time
increases slightly.
Option Description
q
12-bit
(default)
NEF (RAW) images are recorded at a bit-depth of 12 bits.
r 14-bit
NEF (RAW) images are recorded at a bit-depth of 14 bits,
producing files larger than 12-bit files but increasing the
color data recorded.