V1.02
Thom Hogan’s Complete Guide to the Nikon D300
Page 172
EXIF is one of the reasons why you can’t create or edit a JPEG
file on your computer, save it back to the camera, and then
see it on the camera’s LCD, by the way. When you perform
any
Save
or
Update
action on your computer, some of the
EXIF tags in the file get modified (or removed) in ways that the
D300 detects. This is too bad, as it prevents you from editing
a series of JPEG files on your computer, then moving them to
the camera for playback as a slide show. (In theory, if you
replaced the EXIF tag with the correct, camera-consistent
information and didn’t edit the thumbnail, you might be able
to display edited pictures on the D300. In practice, I don’t
know of anyone who’s successfully doing this.)
Note: For a program to display the correct EXIF information for an
image, it has to know something about the camera and the
codes that are stored in the EXIF tags (e.g. “18-70mm F/3.5-
4.5” isn’t stored in the lens field, but is instead stored as a
short code that is unique to this lens). Now that the Nikon
DSLRs have firmly established themselves (and because
Nikon used consistent codes for many of the manufacturer
functions in the various digital SLR models), most software
applications correctly identify most D300 EXIF data.
However, if you find the program you’re using doesn’t,
check to make sure that you’re using the latest version. If
you are, suggest to the developers that they contact Nikon
for the EXIF codes for Nikon cameras. In theory, products
that use Nikon’s SDK should return correct EXIF data tags.
Note:
Older EXIF specifications define the Color Space of
all
digital images as being sRGB, and a number of digital
editing programs, including earlier versions of Photoshop
(but not CS or later), assume that sRGB is the Color Space
of
any
JPEG file that is opened and has EXIF data. The
current EXIF definition has a special way of dealing with
Color Space: the file is named differently for AdobeRGB
Color Space: instead of
DSC_####.JPG
the file would be
named
_DSC####.JPG
. This is implemented in the D300
firmware. Some programs you use may not recognize the
color space if they haven’t been updated to support the
new standard. See “Color Profiles and Color Spaces“ on
page <674> for more information on this subject.