Nikon D300 User Manual page 547

which a computer excels, since you can use software tools
like masking in Capture NX2 or Photoshop to remove parts of
the background and make a more realistic overlay. However,
if you must combine two images in the field, you have a way
to do it in-camera.
NEF (RAW) Processing (D300S only)
(User's Manual – D300S page 327)
NEF (RAW) processing is a function that allows you to
convert a RAW image into a JPEG inside the camera. If you
normally shoot in RAW but need a JPEG quickly, this is a
great function. NEF (RAW) processing is only available on
the D300S, not the D300. And it only works on images taken
with the D300S, so you can't insert a card from your Nikon
D90 and expect to process its images.
There is quite a comprehensive catalog of things you can do
to an image during NEF (RAW) processing. A RAW file is
not yet an image, so the camera settings you took it with are
not permanently applied. In effect, when you use NEF
(RAW) processing you are applying camera settings to the
JPEG image after the fact, and you can change them to
settings different from those with which you took the image
originally.
These same settings are available in the Shooting Menu or by
using external camera controls. However, in this case, the
settings are applied to the image after the fact, instead of
while shooting. See the chapter of this book titled Chapter 3
for a deeper explanation of each setting.
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