Nikon D40 Owner's Manual page 43

NEF (RAW)/RAW+B
Capture NX (available separately;
NEF (RAW) images on a computer. NEF (RAW) photographs can not be printed by most print services
or by direct USB connection; use PictureProject or Capture NX to print NEF (RAW) photographs.
When photographs taken at RAW+B are viewed on the camera, only the JPEG image will be displayed.
When photographs taken at this setting are deleted, both NEF and JPEG images will be deleted.
File Names
Photographs are stored as image files with names of the form "DSC_nnnn.xxx, " where nnnn is a four-
digit number between 0001 and 9999 assigned automatically in ascending order by the camera, and
xxx is one of the following three letter extensions: "NEF" for NEF (RAW) images or "JPG" for JPEG
images. The NEF and JPEG files recorded at a setting of RAW+B have the same file names but different
extensions. Small copies created with the small picture option in the retouch menu have file names
beginning with "SSC_" and ending with the extension ".JPG" (e.g., "SSC_0001.JPG"), while images
recorded with the other options in the retouch menu have file names beginning with "CSC" (e.g.,
"CSC_0001.JPG"). Images recorded at a Optimize Image > Custom > Color Mode setting of II
(AdobeRGB) ( 69) have names that begin with an underscore (e.g., "_DSC0001.JPG").
Image Quality ( 30)/Image Size (
Image quality and size can also be set using the Image quality and Image size options in the shoot-
ing menu.
11— /Fn Button (
Image quality and size can also be set using the command dial.
103) or the supplied PictureProject software are required to view
30)
77)
Reference: More on Photography (All Modes)/Image Quality and Size 31