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Format |
DNG |
JPEG |
Company |
Adobe |
Joint Photographic Experts Group |
Description |
The Digital Negative (DNG) file format is a royalty free RAW image format designed by Adobe Systems |
Nearly all digital cameras have the option to save images in JPEG format. The JPEG format supports 8 bits per color (red, green, and blue) and produces relatively small file sizes. The compression when not too severe does not detract noticeably from the image. But JPEG files can suffer generational degradation when repeatedly edited and saved. Photographic images may be better stored in a lossless non-JPEG format if they will be re-edited in future, or if the presence of small 'artifacts' is unacceptable. It is however the best format for internet publishing in most cases. |
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. |
Small file size, high popularity |
Drawbacks |
Large size. not many programs handle it |
Loss in quality |
Cameras |
The Canon EOS 450D produces noiseless images at high sensitivity, with bigger and brighter viewfinder than its predecessors. Manufacturer's website: http://www.usa.canon.com
Megapixels | 12.20 | Aperture | F1.0 - F91 (Actual aperture range depends on lens used) | Focal length (35mm equiv.) | 1.6x Multiplier | ISO | Auto, 100, 200, 400, 800, 1600 | Year | 2008 |
|
Metadata |
Handles XMP, EXIF or IPTC |
Handles XMP, EXIF or IPTC |