41
Taking Photographs—Image Quality and Size
Image Quality and Size
Making Effective Use of Memory
Together, image quality and size determine how much space each pho to -
graph occupies on the memory card.
Image Quality
The D70S supports the following image quality options (listed in descending
order by image quality and fi le size):
Option
Description
NEF (Raw)
(
RAW
)
Raw 12-bit data from CCD are saved directly to memory
card in compressed
N
ikon
E
lectronic Image
F
ormat (NEF).
JPEG Normal
(
NORM
)
Normal image quality, suited to most ap-
plications.
JPEG Fine
(
FINE
)
Fine image quality, suitable for enlargements
or high-quality prints.
JPEG Basic
(
BASIC
)
Basic image quality, suitable to distribution
by e-mail or use in web pages.
NEF+JPEG
Basic
(
RAW BASIC
)
Two images are recorded, one NEF (RAW) image and one
basic-quality JPEG image. Image size (
43) automatically
set to
L
; JPEG image is 3,008 × 2,000 pixels in size.
NEF (Raw) / NEF + JPEG
NEF images can only be viewed using Nikon Capture 4 version 4.2 or later (available
separately;
191) or PictureProject. When photographs taken at
NEF + JPEG Basic
are viewed on the camera, only the JPEG image will be displayed. When photographs
taken at
NEF + JPEG Basic
are deleted, both NEF and JPEG images will be deleted.
File Names
Photographs are stored as image fi les with names of the form “DSC_
nnnn
.
xxx
,”
where
nnnn
is a four-digit number between 0001 and 9999 as signed automatically in
ascending order by the camera, and
xxx
is one of the following three letter extensions:
“NEF” for NEF images, “JPG” for JPEG im ag es, and “NDF” for Dust Off ref photos
(
166). The NEF and JPEG fi les recorded at a setting of
NEF + JPEG Basic
have the
same fi le names but different extensions. Images recorded at an
Optimize image
>
Color mode
setting of
II
(Adobe RGB)
have names that begin with an underbar, e.g.,
“_DSC0001.JPG” (
56).
Format
NEF
JPEG
NEF+
JPEG
Compr
ession ratio
Medium
Medium
(1 : 8)
(1 : 8)
Low
Low
(1 : 4)
(1 : 4)
High
High
(1 : 16)
(1 : 16)
