Nikon 25515 User Manual - Page 40

More on Photography, Image Quality and Size, Image Quality

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More on Photography More on Photography Image Quality and Size Pictures taken with a digital camera are stored as image files. The size of the files, and with it the number of images that can be recorded on the memory card, depends on the quality and size of the images. Before shooting, choose image quality and size according to how the picture will be used. Image Quality The camera stores images in one of three formats: NEF (RAW), TIFF (HI quality), or JPEG (FINE, NORMAL, or BASIC quality). Compression Option Format ratio1 Description RAW2, 3 HI2, 4 Raw data from CCD are saved in Nikon Elec- NEF tronic Image Format (NEF) without processing Not or compression, preserving high level of detail at compressed file size slightly smaller than that of TIFF images. TIFF High image quality (on par with NEF) in format supported by most imaging applications. FINE 1 : 4 Fine image quality, suitable for enlargements or high-quality prints. NORM (NORMAL) JPEG Normal image quality, suited to most applica- 1 : 8 tions. BASIC 1 : 16 Basic image quality, suitable for pictures that will be distributed by e-mail or used in web pages. 1 To reduce the amount of memory each shot occupies, JPEG images are compressed as they are saved to the memory card. Compression selectively reduces the quality of the image; the more a picture is compressed, the more noticeable this loss of quality is likely to be. This column gives the approximate compression ratio for each setting. 2 Available only in shooting modes (Custom 1) and (Custom 2). Selecting (auto) or scene mode resets image quality to FINE. Digital zoom ( 16) not supported. 3 Available only at an image size of . Direct print ( 69) not supported. 4 Available only at image sizes of and . 30

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More on Photography
More on Photography
Image Quality and Size
Pictures taken with a digital camera are stored as image files.
The size of the
files, and with it the number of images that can be recorded on the memory
card, depends on the quality and size of the images.
Before shooting, choose
image quality and size according to how the picture will be used.
Image Quality
The camera stores images in one of three formats: NEF (RAW), TIFF (HI qual-
ity), or JPEG (FINE, NORMAL, or BASIC quality).
1
To reduce the amount of memory each shot occupies, JPEG images are compressed as
they are saved to the memory card.
Compression selectively reduces the quality of the
image; the more a picture is compressed, the more noticeable this loss of quality is likely
to be.
This column gives the approximate compression ratio for each setting.
2 Available only in shooting modes
(Custom 1) and
(Custom 2).
Selecting
(auto) or scene mode resets image quality to FINE.
Digital zoom (
16) not sup-
ported.
3 Available only at an image size of
.
Direct print (
69) not supported.
4 Available only at image sizes of
and
.
BASIC
Basic image quality, suitable for pictures that will
be distributed by e-mail or used in web pages.
1 : 16
FINE
Fine image quality, suitable for enlargements or
high-quality prints.
1 : 4
JPEG
HI
2, 4
High image quality (on par with NEF) in format
supported by most imaging applications.
TIFF
RAW
2, 3
Raw data from CCD are saved in
N
ikon
E
lec-
tronic Image
F
ormat (NEF) without processing
or compression, preserving high level of detail at
file size slightly smaller than that of TIFF images.
Not
compressed
NEF
NORM
(
NORMAL
)
Normal image quality, suited to most applica-
tions.
1 : 8
Option
Description
Compression
ratio
1
Format