On 11/09/14 11:41, Moritz Augsburger wrote:
> On 2014-09-11 11:54, Robert William Hutton wrote:
>> * spot white balance with the selection area on the dog (as it's black, 
>> right?)
>>
>> As for what white balance is "correct" well, that's a matter of opinion, 
>> unless you happened to shoot a grey card in
>> that light. ;)

I don't even own a grey card. ;)

> And, if geeqie would use the internal preview 1:1 zoom levels wouldn't
> be possible I guess. So it must be better at interpreting the WB in some
> way. Or are the .CR2 included previews the full image size?

I don't know about the other programs, but geeqie definitely uses the embedded 
preview.  Darktable says the image is 
5198x3462.  Here are the embedded previews:

exiv2 -p p raw.CR2
Preview 1: image/jpeg, 160x120 pixels, 13152 bytes
Preview 2: image/tiff, 668x432 pixels, 1731456 bytes
Preview 3: image/jpeg, 5184x3456 pixels, 2326610 bytes

You'll notice that darktable gives you a few extra pixels, this is because the 
developers decided to give you all of the 
available pixels from the sensor, rather than the "official" number.  Now, 
let's extract the JPG preview:

exiv2 -e p3 raw.CR2

And compare them visually in geeqie:

Original: 
https://www.dropbox.com/s/cext1wu7qj2ibrl/raw.CR2%20-%20Geeqie_094.png?dl=0
Preview:  
https://www.dropbox.com/s/ucfr8lz73c9p0on/raw-preview3.jpg%20-%20Geeqie_093.png?dl=0

Look the same to me!

Regards,

Rob


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