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Save RAW files in DNG format instead of RAW

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Offline oversky

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Re: Save RAW files in DNG format instead of RAW
« Reply #290 on: 15 / December / 2008, 22:00:03 »
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Is there any tool available that can convert an uncompressed DNG to a compressed DNG?
Now, I am think about the advantages of shooting in DNG.
The uncompressed DNG is not smaller than the raw format.
It is slower (but acceptable).
It can save me time to convert raw to DNG, but I will run the compression tool anyway.
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Offline hotvedt

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Re: Save RAW files in DNG format instead of RAW
« Reply #291 on: 16 / December / 2008, 00:48:20 »
Quote from: oversky on 15 / December / 2008, 22:00:03
Is there any tool available that can convert an uncompressed DNG to a compressed DNG?
I am 99% sure that "Adobe DNG Converter" does this....
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Offline lrossel

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Re: Save RAW files in DNG format instead of RAW
« Reply #292 on: 16 / December / 2008, 12:18:36 »
I have some issue with the exif tags.

Usually I use GeoSetter for Windows to add the gps information to my shots. If you are interested in this tool, you can get it from:

http://www.geosetter.de/en/#Download

The problem is that this tool recognizes the DNG raw files created by CHDK like valid pictures (this is a great improvement from the original Raws from CHDK that never where recognized), but the Date Taken tag is not found in the dng file.

In order to solve this, I have to copy the date taken from the corresponding jpeg file.

Can be a problem with defines in camera.h or in the dng_hdr.c sources?

May I receive any suggestion to solve this?
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Offline ewavr

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Re: Save RAW files in DNG format instead of RAW
« Reply #293 on: 16 / December / 2008, 12:48:26 »
Screenshot? EXIF?
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Offline lrossel

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Re: Save RAW files in DNG format instead of RAW
« Reply #294 on: 16 / December / 2008, 12:55:53 »
 :o

wow, that was fast, but the same screenshot in my computer shows no date information. And as you can see the corresponding jpeg file has the right taken date.

Could be my Regional Settings (Chile)?
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Offline fudgey

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Re: Save RAW files in DNG format instead of RAW
« Reply #295 on: 16 / December / 2008, 12:59:51 »
Quote from: lrossel on 16 / December / 2008, 12:55:53
wow, that was fast, but the same screenshot in my computer shows no date information. And as you can see the corresponding jpeg file has the right taken date.

Could be my Regional Settings (Chile)?

Your file has .CRW extension, ewavr's is .DNG. Have you tried renaming it DNG?
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Offline lrossel

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Re: Save RAW files in DNG format instead of RAW
« Reply #296 on: 16 / December / 2008, 13:03:20 »
Wait a minute!
I changed manually the extension of the CRW file to DNG and now the Geosetter takes all the Exif data...

What is the reason?

Now I have to set the dng extension in the chdk menu. I hope not to lose the CRW transfer under Camera Window (Canon software).

The Camera Window program doesn't show the CRW files, but when you transfer the jpeg files, it transfer too the corresponding CRW files.

I'll test it in obut 6 hours, when I came back to my home.

I supposed to be working right now... :haha

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Offline ewavr

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Re: Save RAW files in DNG format instead of RAW
« Reply #297 on: 16 / December / 2008, 13:20:34 »
Yes, some programs fails, if extension of dng file is 'crw'.
(attached screenshots for Faststone image viewer, file is the same).

edit: even for dng extension, CHDK version is 0.8.1   :)
edit2: I don't know how CameraWindow transfers 'dng' files.
But I know magic command to mass rename crw to dng (for Windows): ren *.crw *.dng  ;)
« Last Edit: 16 / December / 2008, 13:29:36 by ewavr »
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Offline ewavr

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Re: Save RAW files in DNG format instead of RAW
« Reply #298 on: 16 / December / 2008, 13:49:19 »
Quote from: ewavr on 16 / December / 2008, 13:20:34
edit: even for dng extension, CHDK version is 0.8.1   :)

Oops! Fixed in #640.
Please don't shoot DNG with ver. 639.
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Offline lrossel

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Re: Save RAW files in DNG format instead of RAW
« Reply #299 on: 16 / December / 2008, 16:25:48 »
Quote from: ewavr on 16 / December / 2008, 13:20:34
But I know magic command to mass rename crw to dng (for Windows): ren *.crw *.dng  ;)

 :D You are kidding me, but it is Ok.

I know that I can change the extension to all the dng files, it is not a big deal. 8)

I'll play with this when I came back to home tonight.

Thanks for all the help.
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