Difference between revisions of "Format policies"
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*NEF is a raw (i.e. pre-processed) image format produced by Nikon cameras. | *NEF is a raw (i.e. pre-processed) image format produced by Nikon cameras. | ||
| − | *Xena incorrectly guesses the file type as TIFF and normalizes as it would | + | *Xena incorrectly guesses the file type as TIFF and normalizes as it would a TIFF, with the result that a very large file (e.g. 70 MB) is normalized to a very small one (eg. 250 KB) with considerable loss of data. Xena also removes embedded data added during image editing, converting the data to an XMP file. The result is that any edits added by the creator are removed. |
*NEF is a proprietary format with an unpublished specification. | *NEF is a proprietary format with an unpublished specification. | ||
*NEF files can be very large - 70MB or more. | *NEF files can be very large - 70MB or more. | ||
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*For further information on NEF files see Library of Congress Sustainability of Digital Formats: [http://www.digitalpreservation.gov/formats/fdd/fdd000241.shtml Camera Raw Formats]. | *For further information on NEF files see Library of Congress Sustainability of Digital Formats: [http://www.digitalpreservation.gov/formats/fdd/fdd000241.shtml Camera Raw Formats]. | ||
| − | *Library of Congress states that [http://www.digitalpreservation.gov/formats/fdd/fdd000188.shtml Adobe Digital Negative (DNG), Version 1.1] may be emerging as a standard preservation format for raw camera images. Adobe provides a free Adobe DNG Converter. | + | *Library of Congress states that [http://www.digitalpreservation.gov/formats/fdd/fdd000188.shtml Adobe Digital Negative (DNG), Version 1.1] may be emerging as a standard preservation format for raw camera images. Adobe provides a free (but not open-source) [http://www.adobe.com/products/dng/ Adobe DNG Converter]. |
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Revision as of 14:34, 7 December 2009
Main Page > Documentation > Format-specific preservation issues
| Format | Preservation action plan | Issues and links |
|---|---|---|
| NEF (Nikon Electronic Format, also known as Nikon Image Format) | Possible normalization to Adobe Digital Negative (DNG) format |
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