Re: [darktable-user] Re: Export to JPG Pics are blurred

[Michael Below]

Am Freitag, den 13.05.2016, 20:02 +0200 schrieb Matthias Bodenbinder:
> Am 13.05.2016 um 10:41 schrieb Blickwinkel:

> > In the meantime I found out that the image viewer smooths images when
> > enlarged or reducers. In the settings you can turn that off, now it looks
> > better, but not optimal. In addition, the other color rendering remains. I
> > think this is probably due to the export.

I think you have used more sharpening in the RAW edit than in the JPG.
If you export the RAW to JPG with the settings in the XMP, the fresh JPG
looks similar to your RAW. If you reset the sharpening to default for
the RAW in darktable the results look very similar to the JPG you
provided. 

The amount of sharpening done also has an effect on the colors. It is
recommended to use a calibrated monitor for colors and lightness. 

But, as somebody else said, the RAW edit does not contain more details
-- the eyes are just not very sharp (the pants seem to be a bit more in
focus, maybe the head is blurred by her movement?).

Ciao
  Michael


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[darktable-user] Re: Export to JPG Pics are blurred

[Blickwinkel]

Tobias Ellinghaus  writes:

> 
> Am Donnerstag, 12. Mai 2016, 15:26:02 schrieb Blickwinkel:
> > Stéphane Gourichon  ...> writes:
> > > Le 12/05/2016 15:12, Blickwinkel a écrit :
> > > > Here is a screenshot Left side is RAW edit, right side jpg
> > > > http://www.fotos-hochladen.net/uploads/bildschirmfoto71niatemp3.png _
> > > 
> > > Left is definitely pixellated while right is smoothed.
> > > 
> > > On the left, everything is rendered with 2x2 pixel blocks.
> > > 
> > > Left looks less blurry but does not actually contain more details that
> > > right.
> > > 
> > > So, it's not that "JPG are blurred".
> > > 
> > > Temporary diagnostic: pictures aren't displayed 1:1 scale but they are
> > > scaled up 2:1, aren't they ?
> > > 
> > > What software are you using to display JPEG on the right ? Can you ask
> > > it to display 1:1 size (pixel-perfect) ?
> > > 
> > > On the left, are you seeing the RAW file with darkable ? Else with what
> > > ? Can you ask it to display 1:1 size (pixel-perfect) ?
> > > 
> > > Can you share RAW and JPEG files ? It will help make a definite
> > > diagnostic.
> > > 
> > > Regard.
> > 
> > Both pics are scaled up to 200% for this screenshot.
> > In this case I used Bildbetrachter 3.10.2 Der GNOME-Bildbetrachter, but with
> > other programs like g-thumb or shotwell it looks just as
> > What did you mean with pixel-perfect?
> > I can upload the files, but it is a topless picture, this is allowed here?
> 
> What a silly question, those are the best. 
> 
> More seriously, the problem is most likely that you are looking at the images 
> at 200%. Everything but 100% requires some kind of scaling, done by the image 
> viewer. And most of them prefer speed over quality there, so the results will 
> be different. The only way to compare images is looking at them at 100% so 
> that no scaling is required at all.
> 
> > Greets
> 
> Tobias

Hi Tobis,
In the meantime I found out that the image viewer smooths images when
enlarged or reducers. In the settings you can turn that off, now it looks
better, but not optimal. In addition, the other color rendering remains. I
think this is probably due to the export.

Also, I found the DT reduced the resolution on the issue in JPG, although I
have set in the size 0x0.
RAW file 7424x4924
JPG file 3286x2197
Tif file 3286x2197

Ok, here are the Links to the files
The original RAW File + xmp, the exported JPG and an exported tif

https://www.dropbox.com/s/cd1y8eq167fc9lv/20160424_0135.NEF?dl=0
https://www.dropbox.com/s/81fhygz6uun2vcy/20160424_0135.NEF.xmp?dl=0
https://www.dropbox.com/s/a37cmb3ohnpkmud/20160424_0135.jpg?dl=0
https://www.dropbox.com/s/q3juos4ve183o1h/20160424_0135.tif?dl=0

Greets 
Franjo






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Re: [darktable-user] Re: Export to JPG Pics are blurred

[Tobias Ellinghaus]

Am Donnerstag, 12. Mai 2016, 15:26:02 schrieb Blickwinkel:
> Stéphane Gourichon  writes:
> > Le 12/05/2016 15:12, Blickwinkel a écrit :
> > > Here is a screenshot Left side is RAW edit, right side jpg
> > > http://www.fotos-hochladen.net/uploads/bildschirmfoto71niatemp3.png _
> > 
> > Left is definitely pixellated while right is smoothed.
> > 
> > On the left, everything is rendered with 2x2 pixel blocks.
> > 
> > Left looks less blurry but does not actually contain more details that
> > right.
> > 
> > So, it's not that "JPG are blurred".
> > 
> > Temporary diagnostic: pictures aren't displayed 1:1 scale but they are
> > scaled up 2:1, aren't they ?
> > 
> > What software are you using to display JPEG on the right ? Can you ask
> > it to display 1:1 size (pixel-perfect) ?
> > 
> > On the left, are you seeing the RAW file with darkable ? Else with what
> > ? Can you ask it to display 1:1 size (pixel-perfect) ?
> > 
> > Can you share RAW and JPEG files ? It will help make a definite
> > diagnostic.
> > 
> > Regard.
> 
> Both pics are scaled up to 200% for this screenshot.
> In this case I used Bildbetrachter 3.10.2 Der GNOME-Bildbetrachter, but with
> other programs like g-thumb or shotwell it looks just as
> What did you mean with pixel-perfect?
> I can upload the files, but it is a topless picture, this is allowed here?

What a silly question, those are the best. ;-)

More seriously, the problem is most likely that you are looking at the images 
at 200%. Everything but 100% requires some kind of scaling, done by the image 
viewer. And most of them prefer speed over quality there, so the results will 
be different. The only way to compare images is looking at them at 100% so 
that no scaling is required at all.

> Greets

Tobias

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[darktable-user] Re: Export to JPG Pics are blurred

[Blickwinkel]

Stéphane Gourichon  writes:

> 
> Le 12/05/2016 15:12, Blickwinkel a écrit :
> > Here is a screenshot Left side is RAW edit, right side jpg 
> > http://www.fotos-hochladen.net/uploads/bildschirmfoto71niatemp3.png _
> 
> Left is definitely pixellated while right is smoothed.
> 
> On the left, everything is rendered with 2x2 pixel blocks.
> 
> Left looks less blurry but does not actually contain more details that 
> right.
> 
> So, it's not that "JPG are blurred".
> 
> Temporary diagnostic: pictures aren't displayed 1:1 scale but they are 
> scaled up 2:1, aren't they ?
> 
> What software are you using to display JPEG on the right ? Can you ask 
> it to display 1:1 size (pixel-perfect) ?
> 
> On the left, are you seeing the RAW file with darkable ? Else with what 
> ? Can you ask it to display 1:1 size (pixel-perfect) ?
> 
> Can you share RAW and JPEG files ? It will help make a definite diagnostic.
> 
> Regard.
> 

Both pics are scaled up to 200% for this screenshot.
In this case I used Bildbetrachter 3.10.2 Der GNOME-Bildbetrachter, but with
other programs like g-thumb or shotwell it looks just as
What did you mean with pixel-perfect?
I can upload the files, but it is a topless picture, this is allowed here?
Greets



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[darktable-user] Re: Export to JPG Pics are blurred

[Blickwinkel]

Marek Vančo  writes:

> 
> 
> Please, can you add screenshots of images?
> Le 12 mai 2016 13:51, "Blickwinkel"
 a écrit :Hello,
> if I export the edited images to jpg these are blurred.
> The original pic size is 7424x4924 px
> Export configuration
> Jpeg 8bit
> Quality 100%
> Size 0x0
> Does anyone have any idea why this may be?
> 
> darktable user mailing list
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> 
> 
> 
> 
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> 
> 
> 


I'm not sure if you mean this

http://www.fotos-hochladen.net/uploads/bildschirmfototo96npajme.png



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Re: [darktable-user] Re: Export to JPG Pics are blurred

[Stéphane Gourichon]

Le 12/05/2016 15:12, Blickwinkel a écrit :
Here is a screenshot Left side is RAW edit, right side jpg 
http://www.fotos-hochladen.net/uploads/bildschirmfoto71niatemp3.png _


Left is definitely pixellated while right is smoothed.

On the left, everything is rendered with 2x2 pixel blocks.

Left looks less blurry but does not actually contain more details that 
right.


So, it's not that "JPG are blurred".

Temporary diagnostic: pictures aren't displayed 1:1 scale but they are 
scaled up 2:1, aren't they ?


What software are you using to display JPEG on the right ? Can you ask 
it to display 1:1 size (pixel-perfect) ?


On the left, are you seeing the RAW file with darkable ? Else with what 
? Can you ask it to display 1:1 size (pixel-perfect) ?


Can you share RAW and JPEG files ? It will help make a definite diagnostic.

Regard.

--
Stéphane Gourichon


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