Nikon D300s - Manual (Page 94)

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Image Quality
The D300S supports the following image quality options. See
page 394 for information on the number of pictures that can be
stored at different image quality and size settings.
Option File type Description
NEF (RAW) NEF
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
processing.
TIFF (RGB)
TIFF
(RGB)
Record uncompressed TIFF-RGB images at a bit
depth of 8 bits per channel (24-bit color).
TIFF is
supported by a wide variety of imaging
applications.
JPEG fine
JPEG
Record JPEG images at a compression ratio of
roughly 1:4 (fine image quality).
*
JPEG normal
Record JPEG images at a compression ratio of
roughly 1:8 (normal image quality).
*
JPEG basic
Record JPEG images at a compression ratio of
roughly 1:16 (basic image quality).
*
NEF (RAW)+
JPEG fine
NEF/
JPEG
Two images are recorded, one NEF (RAW) image
and one fine-quality JPEG image.
NEF (RAW)+
JPEG normal
Two images are recorded, one NEF (RAW) image
and one normal-quality JPEG image.
NEF (RAW)+
JPEG basic
Two images are recorded, one NEF (RAW) image
and one basic-quality JPEG image.
*
Size priority selected for JPEG compression.
A NEF (RAW) Recording
The
NEF (RAW) recording item in the shooting menu controls
compression ( 0 70) and bit depth (0 70) for NEF (RAW) images.
A JPEG Compression
JPEG images can be compressed for relatively uniform file size or
optimal image quality. The
JPEG compression option in the shooting
menu can be used to choose the type of compression ( 0 70).