Image quality and size, Image quality – Nikon D70 User Manual

Page 51

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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 D70 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 Nikon Electronic Image Format (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 the software provided with the camera or Nikon
Capture 4 version 4.1 or later (

191). 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)

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