Nikon D300 User Manual page 82

The D300 supports the following image quality options.
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RAW data from the image sensor are saved
directly to the memory card in Nikon Electronic
Format (NEF). Use with images that will be
transferred to a computer for printing or
NEF (RAW) NEF processing. Note that once transferred to a
computer, NEF (RAW) images can only be viewed
using ViewNX version 1.2.0 or later or other
compatible software such as Capture NX version
1.3.5 or later or Capture NX 2 version 2.1.0 or
later (available separately; pg. 368).
Record uncompressed TIFF-RGB images at a bit
TIFF depth of 8 bits per channel (24-bit color). TIFF is
TIFF (RGB)
(RGB) supported by a wide variety of imaging
applications.
Record JPEG images at a compression ratio of
JPEG fine
roughly 1:4 (fine image quality).*
Record JPEG images at a compression ratio of
JPEG normal JPEG
roughly 1:8 (normal image quality). _
Record JPEG images at a compression ratio of
JPEG basic
roughly 1:16 (basic image quality). _
NEF (RAW)+ Two images are recorded, one NEF (RAW) image
JPEG fine and one fine-quality JPEG image.
NEF (RAW)+ NEF/ Two images are recorded, one NEF (RAW) image
JPEG normal JPEG and one normal-quality JPEG image.
NEF (RAW)+ Two images are recorded, one NEF (RAW) image
JPEG basic and one basic-quality JPEG image.
-* [Size priority] selected for [JPEG compression].
56
[] File Size
See page 405 for information on the number of pictures that can be
recorded at different image quality and size settings.