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06/02/2014 04:06:07 PM · #26 |
Originally posted by Kelli:
Originally posted by backdoorhippie:
Originally posted by Yo_Spiff:
If you shoot in RAW, those problems do not happen with RAW files. I have always uploaded the RAW that was copied to my hard drive (aside from minimal editing challenges), though I do keep the card for a while just in case. |
I beg to differ. I have been shooting RAW for years, have everything backed up, and yet (until I read specifics) I am screwed because I choose to convert the RAW file to DNG. I thought I might be OK if I turned on "Embed Original File" on the Lightroom import as it allows extraction of the original file, but after reading this I'm not so sure. I understand why, but it's a little ridiculous to change your workflow after years and go back to a different format because people are prone to cheating in things like this. Makes what should be a fun experience more than just a bit of a pain in the arse. |
If you shoot in Raw, then your original file is a Raw file, not a DNG. It's really that simple. The rules clearly state an unaltered "original". |
Just to clarify it a bit, DNG is technically a RAW file. Canon uses RAW, Nikon uses NEF, and Adobe created DNG (which stands for Digital Negative). These are all RAW files.
However, the fact remains that a DNG file cannot possibly be the original file, unless you took it with your Adobe camera. |
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06/02/2014 04:45:09 PM · #27 |
Originally posted by Art Roflmao:
Originally posted by GrillTowel:
Lighten up, Francis. |
+1 |
I had to Google the phrase...
Lighten up, Francis |
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06/02/2014 04:45:47 PM · #28 |
Originally posted by bohemka:
Just to clarify it a bit, DNG is technically a RAW file. Canon uses RAW, Nikon uses NEF, and Adobe created DNG (which stands for Digital Negative). These are all RAW files.
However, the fact remains that a DNG file cannot possibly be the original file, unless you took it with your Adobe camera. |
Some amplification on this... a DNG file is really just your original RAW file with a "wrapper" around it, and in the wrapper is an instruction sheet that tells a RAW converter how to interpret the data. The problem arises because the DNG specification also allows other types of data, like TIFF. So looking at the wrapper from the outside, it's really difficult to tell that it contains "unadulterated" material.
Converting a RAW file to DNG can save some space (not a lot, FWIW), but the alternative of "embedding" the original RAW file actually results in a DNG file with "two copies of the DNA" and therefore a much larger file than the original RAW. So that's not really a workable option.
My advice to those that want to use DNG to ensure readability of RAW files and still want to use images for challenges is to create archival copies of the RAW files for challenge images prior to DNG conversion.
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06/02/2014 05:03:02 PM · #29 |
| Pentax, Leica, Casio, Nokia, Sinar, Samsung: these cameras I am aware of that use DNG as their native RAW format, or at least as an option for the native capture. |
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06/02/2014 05:20:55 PM · #30 |
Originally posted by Bear_Music:
Pentax, Leica, Casio, Nokia, Sinar, Samsung: these cameras I am aware of that use DNG as their native RAW format, or at least as an option for the native capture. |
Pentax uses PEF as a default, and DNG as an option. Many Pentax (er, Ricoh) users, myself included, just opt to save everything as a DNG, because some programs won't read PEFs, and the feeling is if PEF ever goes away DNG will still exist. So, at least as far as Pentax goes, DNG is as original a file as you're gonna get. |
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06/02/2014 05:23:51 PM · #31 |
Originally posted by EstimatedEyes:
... as far as Pentax goes, DNG is as original a file as you're gonna get. |
And (as noted in the rules) that's basically OK, especially if the EXIF notes that the SaveAsDNG option was in effect at the time of capture ... |
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06/02/2014 09:25:55 PM · #32 |
Originally posted by GrillTowel:
Lighten up, Francis. |
+1 does not compute. +10 feels more appropriate. |
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06/02/2014 11:34:53 PM · #33 |
Originally posted by CEJ:
Originally posted by GrillTowel:
Lighten up, Francis. |
+1 does not compute. +10 feels more appropriate. |
hahaha....that would be even funnier if said towards me!...Francis... |
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06/03/2014 04:57:11 AM · #34 |
Originally posted by Leo:
Originally posted by Art Roflmao:
Originally posted by GrillTowel:
Lighten up, Francis. |
+1 |
I had to Google the phrase...
Lighten up, Francis |
Me too, I was looking for someone of that name,lol |
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06/03/2014 06:12:44 AM · #35 |
Originally posted by kirbic:
Originally posted by bohemka:
Just to clarify it a bit, DNG is technically a RAW file. Canon uses RAW, Nikon uses NEF, and Adobe created DNG (which stands for Digital Negative). These are all RAW files.
However, the fact remains that a DNG file cannot possibly be the original file, unless you took it with your Adobe camera. |
Some amplification on this... a DNG file is really just your original RAW file with a "wrapper" around it, and in the wrapper is an instruction sheet that tells a RAW converter how to interpret the data. The problem arises because the DNG specification also allows other types of data, like TIFF. So looking at the wrapper from the outside, it's really difficult to tell that it contains "unadulterated" material.
Converting a RAW file to DNG can save some space (not a lot, FWIW), but the alternative of "embedding" the original RAW file actually results in a DNG file with "two copies of the DNA" and therefore a much larger file than the original RAW. So that's not really a workable option.
My advice to those that want to use DNG to ensure readability of RAW files and still want to use images for challenges is to create archival copies of the RAW files for challenge images prior to DNG conversion. |
Which is what I'm now doing - but never had to do before. Sort of a PITA since I obviously shoot for more than just thee challenges, so I either have to selectively archive or over archive. What I've decided to do is just go back to not converting on import and then converting after the fact. This way, should the Hidden Gem challenge show up again I'm not SOL. |
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