Embedded previews in DNG files

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Embedded previews in DNG files

Matthew Fauver
I've recently been converting all my Sony a200's RAW files to DNG with the JPEG preview set to medium. I was just wondering, what uses the embedded thumbnail? Because it doesn't looks like digiKam or Nautilus does.

Also, random question, do I lose any data when converting my RAW files to DNG?
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Re: Embedded previews in DNG files

Matthew Fauver
No one ever answered my question :(

On Sun, 2010-05-09 at 19:42 -0500, Matthew Fauver wrote:

> I've recently been converting all my Sony a200's RAW files to DNG with
> the JPEG preview set to medium. I was just wondering, what uses the
> embedded thumbnail? Because it doesn't looks like digiKam or Nautilus
> does.
>
> Also, random question, do I lose any data when converting my RAW files
> to DNG?
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> Digikam-users mailing list
> [hidden email]
> https://mail.kde.org/mailman/listinfo/digikam-users


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Re: Embedded previews in DNG files

Remco Viëtor
on Thursday 13 May 2010, Matthew Fauver wrote:
>
> No one ever answered my question :(
Then I'll give it a shot, though I don't use DNG myself :) (I do have a Sony
reflex though)
>
> On Sun, 2010-05-09 at 19:42 -0500, Matthew Fauver wrote:
> > I've recently been converting all my Sony a200's RAW files to DNG with
> > the JPEG preview set to medium. I was just wondering, what uses the
> > embedded thumbnail? Because it doesn't looks like digiKam or Nautilus
> > does.

Afaik, Digikam (and I'd assume Nautiles)uses the embedded thumbnail in album
view. Also, in single image view, there's a gray rectangle saying 'embedded
jpeg preview' when it shows a ARW file.

> > Also, random question, do I lose any data when converting my RAW files
> > to DNG?
No idea, you shouldn't lose any image data, metadata might be more tricky.
Someone else who is better informed could perhaps answer that one.

Remco


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