Nikon 25215 manual Jpeg Compression Menu, Quality varies with scene recorded, File Names

The JPEG Compression Menu

The JPEG compression menu offers the following options for JPEG images:

Option	Description
Size priority	Images are compressed to produce relatively uniform file size.
(default)	Quality varies with scene recorded.

Optimal quality Optimal image quality. File size varies with scene recorded.

The effects of these options are most pronounced with large image sizes ( 48), high sensitivity ( 52), complex scenes, image quality settings of RAW+BASIC or BASIC, or heavy sharpening ( 67). To choose an option:

1 Highlight JPEG compression in the shooting menu ( 166) and press the multi selector to the right.

2 Highlight the desired option and press the multi selector to the right. The shooting menu will be displayed. The selected option takes effect whenever image quality is set to NEF (Raw) + JPEG Fine, NEF (Raw) + JPEG Nor- mal, NEF (Raw) + JPEG Basic, JPEG Fine, JPEG Normal, or JPEG Basic.

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 exten- sions: “NEF” for NEF images, “TIF” for TIFF-RGB, “JPG” for JPEG images, and “NDF” for Dust Off ref photos ( 217–218). The NEF and JPEG files recorded at a setting of “NEF+JPEG” have the same file names but different extensions. Images recorded at a Color space setting of AdobeRGB ( 69) have names that begin with an underbar (e.g., “_DSC0001.JPG”). The “DSC” portion of the file name can be changed using the File Naming option in the shooting menu ( 171).

Taking Photographs—Image Quality and Size

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