pef vs dng

P. J. Alling webstertwentysix at gmail.com
Wed Oct 7 14:46:36 EDT 2009


TIFF format is however very lose, and can accommodate compression 
schemes that are not commonly used, which would make such files 
difficult to read at a future date.

steve harley wrote:
> On 2009-10-06 20:56 , Doug Franklin wrote:
>> [...] and I won't believe it anyway until the format has been
>> around and interchangeable for two or three or seven decades, minimum,
>> at which point I'll likely be long dead. :-)
>
> i have some PICT files dating back to at least 1987 that i can still 
> open on my Mac
>
> <http://en.wikipedia.org/wiki/PICT>
>
> the TIFF format, on which DNG is based, is about that old too; i 
> believe that one can very easily get a TIFF out of any DNG, which to 
> me feels like a good bet for 50 years on
>
> (the hard part is not converting the data, it is storing the files for 
> decades in a way that will be continue to be accessible)
>
>
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