[Digikam-users] Re: tagging: cr2 vs dng

[Jim Dory]

On Sun, Jan 2, 2011 at 4:36 AM, Remco Viëtor <remco.vietor at wanadoo.fr> wrote:
> on Sunday 02 January 2011, Jim Dory wrote:
>> (...)
>> So, when I tag DNG files in Digikam - it takes an incredibly long time
>> when tagging several at once. I convert all my CR2 files to DNG then
>> move off the CR2 files to an external backup and forget about them and
>> just have DNG in Digikam. Unfortunately I've done this to many
>> hundreds of photos before tagging them - and now face the painfully
>> slow tagging process. Easy workaround in the future and something I
>> now realize I should have been doing is just first tag the CR2s before
>> converting -as the tags are preserved during the conversion to DNG.
>>
>> So not sure if my setup is wrong or I'm doing something wrong, but not
>> sure why DNG takes so long in applying tags. I am using Adobe's DNG
>> converter as I have not yet figured out how to get Digikam's DNG
>> conversion to work as well - I'm not happy with color/white balance.
>> ...
>
> Not sure if I'm on the right track, but the speed difference might be due to
> Digikam not writing the tags to CR2 files, while it can (and does) write them
> to the DNG files. In both cases the database will be updated as well, but that
> is relatively fast.
>
> This would also imply that tagging the CR2 files and then converting with
> Adobe converter wouldn't help (I'd not expect the Adobe converter to use the
> Digikam database)
>
> Good luck

I just tried tagging the cr2 files and converting to DNG again. This
time it did not bring the tags along - the DNG files are not tagged.
So I must have been fooled somehow or imagined it worked before. Dang.

cheers (and thanks for reply), Jim