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File names for various digital cameras and RAW extensions
Two questions about recorded digital photo files:
1. Filename for photos : Canon with IMGxxx, Panasonic with Pxxx, Casio with CIMGxxx, Sony with DSCxxx. What about others such as Pentax, Nikon, Kodak, Olympus, Fuji, etc. ? Could this name be changed prior to picture taken? or is this feature built-in the camera that the photos will always have that file name, plus the numbers that follow? 2. Why there are so many file extension for the RAW files? I heard different extension name for different brand camera, and even different name for same camera with different model. Example : Nikon with .NEF extension. With this different extension name, does this mean that the data must be read by a special softwares (as the one that comes with the camera or special PSP or Photoshop) ? What happens if you rename the file extension on purpose, can it be read by PSP or photoshop? or it will become corrupt? Is there a common file extension name, such as .RAW? Thanks for info. |
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File names for various digital cameras and RAW extensions
On Mon, 22 Oct 2007 17:08:18 -0700, aniramca wrote:
Two questions about recorded digital photo files: 1. Filename for photos : Canon with IMGxxx, Panasonic with Pxxx, Casio with CIMGxxx, Sony with DSCxxx. What about others such as Pentax, Nikon, Kodak, Olympus, Fuji, etc. ? My kodak P850 produces 100_nnnn.kdc for raw - nnnn represents a serial number. Could this name be changed prior to picture taken? or is this feature built-in the camera that the photos will always have that file name, plus the numbers that follow? 2. Why there are so many file extension for the RAW files? I heard different extension name for different brand camera, and even different name for same camera with different model. Example : Nikon with .NEF extension. With this different extension name, does this mean that the data must be read by a special softwares (as the one that comes with the camera or special PSP or Photoshop) ? What happens if you rename the file extension on purpose, can it be read by PSP or photoshop? or it will become corrupt? Is there a common file extension name, such as .RAW? Thanks for info. Don't know about MS - but *nix could not care less what the extension is - it looks at the contents of the file - you can name it whatever you want. |
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File names for various digital cameras and RAW extensions
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File names for various digital cameras and RAW extensions
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File names for various digital cameras and RAW extensions
On Tue, 23 Oct 2007 11:19:33 +0100, "Trev"
trevbowdenAT.dsl.pipex.COM wrote: There is a .raw Yes. but its not a camera raw format Wrong, it *might* be. Panasonic cameras use .raw as a file extension for their camera raw files. and existed long before digital cameras. Yes, it did. It's never wise to trust a file extension to identify a file type without checking the contents. -- John Bean |
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File names for various digital cameras and RAW extensions
fup2 rec.photo.digital
Floyd L. Davidson: The actual distinctions between file formats are embedded in the files, not the name. For major differences, for example to indicate that a file is from Canon, Pentax, Nikon, or whatever, the first few bytes of the file are an indicator. That is referred to as a "magic number", and is true of most unique file formats (JPEG, .exe, TIFF, .dvi, .gz and so on all start with a "magic number" to identify them uniquely). "Uniquely" - in theory. To make things more complicated, some formats get reused. As an example, Nikon's NEF (at least the variant I got) is in fact a TIFF file with some private tags. When you open a 20 MB NEF file with a regular image viewer that ignores file extensions (as it should) and doesn't know about NEF (like ACDSee 3), all that is displayed is the tiny RGB preview image. However, people handling Nikon RAW files usually know what to do with them anyway, so I wouldn't consider that a huge problem. If the file extensions get lost and the person responsible for handling the files doesn't know about their origin, it might become a problem, though. |
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