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embeddig the "raw file" when converting to" dng"
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Dec 10, 2014 14:42:19   #
Dngallagher Loc: Wilmington De.
 
redhogbill wrote:
that's the problem.. I have to open photoshop then get the file then it will show the image!!
attached is a photo of the original and what it looks like when I save it as a dng


Yes, exactly. Lightroom and other Adobe products will be able to convert the DNG into an image, other packages may not without a codec on your OS.

Have you looked at Adobe's codec?

http://www.adobe.com/support/downloads/product.jsp?product=194&platform=Windows

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Dec 10, 2014 16:19:55   #
redhogbill Loc: antelope, calif
 
Dngallagher wrote:
Yes, exactly. Lightroom and other Adobe products will be able to convert the DNG into an image, other packages may not without a codec on your OS.

Have you looked at Adobe's codec?

http://www.adobe.com/support/downloads/product.jsp?product=194&platform=Windows



thanks Dngallagher, that is what I needed. I did look for a codec but found nothing,

You would think that when you download these programs, they would inform a person that they need another program to run it!!

any ways, thanks again for sticking with me for the long haul!!!

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Dec 10, 2014 16:42:15   #
Searcher Loc: Kent, England
 
If you have Win 7, the codec you need is this one:

http://www.adobe.com/support/downloads/detail.jsp?ftpID=5495

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Dec 10, 2014 17:08:25   #
Dngallagher Loc: Wilmington De.
 
redhogbill wrote:
thanks Dngallagher, that is what I needed. I did look for a codec but found nothing,

You would think that when you download these programs, they would inform a person that they need another program to run it!!

any ways, thanks again for sticking with me for the long haul!!!


Kool beans man ! Great!

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Dec 10, 2014 19:49:45   #
DirtFarmer Loc: Escaped from the NYC area, back to MA
 
Dngallagher wrote:
No, DNG's do not cause you to lose non-destructiuve editing.

DNG is a container. The original raw data is in there - along with areas that hold a copy of the original raw data if you like to keep the original file, and your edits, and a JPG preview, and the EXIF info....


My real concern is that with every edit, you're overwriting your old DNG file with a new one with the new edits added in. Every time you write over a file you risk corruption. True, you're not changing the original raw data, just appending stuff to it, but if you lose the ability to read the file, it's all over.

When you use sidecar files, every edit overwrites the old sidecar file so there's risk of corruption there too. But in that case, you lose your edits, not the file that contains the RAW data.

I suspect the risk of corruption is probably fairly small, since I haven't noticed any of my sidecar files becoming corrupted.

All this is OT to the original post, so I'm going to stop here and read some old posts on DNG to get an idea of why people use them (or not). When I get something more to say I'll start a new thread. Thanks for the reply.

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Dec 10, 2014 22:15:28   #
Dngallagher Loc: Wilmington De.
 
DirtFarmer wrote:
My real concern is that with every edit, you're overwriting your old DNG file with a new one with the new edits added in. Every time you write over a file you risk corruption. True, you're not changing the original raw data, just appending stuff to it, but if you lose the ability to read the file, it's all over.

When you use sidecar files, every edit overwrites the old sidecar file so there's risk of corruption there too. But in that case, you lose your edits, not the file that contains the RAW data.

I suspect the risk of corruption is probably fairly small, since I haven't noticed any of my sidecar files becoming corrupted.

All this is OT to the original post, so I'm going to stop here and read some old posts on DNG to get an idea of why people use them (or not). When I get something more to say I'll start a new thread. Thanks for the reply.
My real concern is that with every edit, you're ov... (show quote)



Lots of info on the DNG format - have not heard anything bad myself, been working out for me for quite a while now.

Would be interested in getting info where there is a real problem of course though.

http://www.dpbestflow.org/node/305

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Dec 11, 2014 00:34:56   #
BHC Loc: Strawberry Valley, JF, USA
 
redhogbill wrote:
that's the problem.. I have to open photoshop then get the file then it will show the image!!
attached is a photo of the original and what it looks like when I save it as a dng

The second image is simply an icon. I don't remember the significance of the turned down corner, bit I believe it indicates a multi-page Adobe file.

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Dec 11, 2014 05:43:40   #
picsman Loc: Scotland
 
I used to convert NEF files to TIFFS and then to jpg via PS. I used view NX for the conversion. Now I use dng, why? Because I batch process hundreds of files and find the dngs process much faster. My mac is 8 years old and takes 35 seconds to process a TIFF but only 10 seconds to process a dng. When I want to upload an event the day I took it that time saving is enormous for the volumes of images I have.

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Dec 11, 2014 06:59:16   #
DirtFarmer Loc: Escaped from the NYC area, back to MA
 


Thanks for that link.

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Dec 11, 2014 07:26:55   #
redhogbill Loc: antelope, calif
 
Searcher wrote:
If you have Win 7, the codec you need is this one:

http://www.adobe.com/support/downloads/detail.jsp?ftpID=5495


thanks searcher

:thumbup: :thumbup:

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Dec 11, 2014 10:50:41   #
peterg Loc: Santa Rosa, CA
 
jeep_daddy wrote:
The Disadvantage There is only really one downside to using the DNG format. If your camera’s
manufacturer ever comes out with some amazing software that you might want to use, this
software most likely wont support DNG. Instead, they’ll only support their own proprietary file
format.
Also: DXo Optics Pro will not support DNG files that were created in a computer. It will process DNG files, and other formats, created by a camera. Example: You import a Nikon NEF raw file into Lightroom. DXo will process it. If you convert the NEF file to DNG when you import, DXo will not process it. However, Dxo will support a DNG file created by a Ricoh GR camera.

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Dec 11, 2014 17:23:14   #
redrocktom Loc: Sedona
 
Dngallagher wrote:
No, DNG's do not cause you to lose non-destructiuve editing.

DNG is a container. The original raw data is in there - along with areas that hold a copy of the original raw data if you like to keep the original file, and your edits, and a JPG preview, and the EXIF info....

If you open a heavily edited and cropped DNG file with a program that does not deal with Lightroom edits, then you get your original image before the edits as they will not be applied.

When I edit my files in Lightroom, I can go to ANY point in the editing, even back to how the image looked when originally imported and start over - if that is not non-destructive, I don't know what is.

http://www.dpbestflow.org/file-format/raw-file-formats

I went for a long time using Nikon raw before switching to DNG, after all is said and done, have not missed out on anything that NEF would have given me over DNG.

BUT, it is a personal choice.
No, DNG's do not cause you to lose non-destructiuv... (show quote)


Great article Don. Thank you.

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Dec 11, 2014 17:45:26   #
James R. Kyle Loc: Saint Louis, Missouri (A Suburb of Ferguson)
 
redhogbill wrote:
thanks searcher

:thumbup: :thumbup:

++++++++++++++++++++

Yes...

Thank You.

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Dec 11, 2014 20:09:16   #
lightcatcher Loc: Farmington, NM (4 corners)
 
Searcher wrote:
Embedding the original raw file also means that if required, the raw file can be removed from the dng at a later date.


How is the raw removed from the dng, that part I don't understand??

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Dec 11, 2014 20:13:14   #
Dngallagher Loc: Wilmington De.
 
lightcatcher wrote:
How is the raw removed from the dng, that part I don't understand??


The free Adobe DNG converter software has an option to extract the embedded raw file from the DNG.

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