Format | DNG | PPM |
Company | Adobe | Pixmap file format |
Description | The Digital Negative (DNG) file format is a royalty free RAW image format designed by Adobe Systems | Netpbm format is a family including the portable pixmap file format (PPM), the portable graymap file format (PGM) and the portable bitmap file format (PBM). These are ASCII files that provide very basic functionality and serve as a least-common-denominator for converting pixmap, graymap, or bitmap files between different platforms. Several applications refer to them collectively as the PNM format (portable anymap). |
Benefits | It is a response from Adobe to the demand for a unifying camera raw file format. Digital Negative is based on the TIFF/EP format and mandates use of metadata. | Popular |
Drawbacks | Large size. not many programs handle it | Uncompressed large files |
Metadata | Handles XMP, EXIF or IPTC |
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