Thanks for your reply, Johannes.
I checked darktablerc and both of those options were the opposite of what
you listed. I changed them, so now I have:
never_use_embedded_thumb=FALSE
plugins/lighttable/low_quality_thumbnails=TRUE
After running darktable-generate-cache (which took a few hours for 4,000
images), I now have high-quality previews, thank you!
I have two follow-up questions:
1) Does darktable refer to everything on the lighttable as a "thumbnail"?
In other words, when I zoom in all the way in lighttable mode, what I see
is affected by any settings referring to "thumbnail," even though it's now
quite large on screen? If so, that probably means 1080p is the right
setting if I want to view images on the lighttable at full-screen, right?
2) During darktable-generate-cache, I received the following set of errors
(repeated for a handful of images):
TIFFReadDirectory: Warning, Unknown field with tag 18246 (0x4746)
encountered.
TIFFReadDirectory: Warning, Unknown field with tag 18249 (0x4749)
encountered.
TIFFReadDirectory: Warning, Unknown field with tag 36867 (0x9003)
encountered.
TIFFReadDirectory: Warning, Unknown field with tag 37398 (0x9216)
encountered.
TIFFReadDirectory: Warning, Unknown field with tag 18246 (0x4746)
encountered.
TIFFReadDirectory: Warning, Unknown field with tag 18249 (0x4749)
encountered.
TIFFReadDirectory: Warning, Unknown field with tag 36867 (0x9003)
encountered.
TIFFReadDirectory: Warning, Unknown field with tag 37398 (0x9216)
encountered.
Any idea what that means?
Thanks again for your help,
-Owen
On Sat, Feb 13, 2016 at 12:44 PM, johannes hanika <hana...@gmail.com> wrote:
> hi,
>
> can you check your darktablerc for something similar to:
>
> never_use_embedded_thumb=true
> plugins/lighttable/low_quality_thumbnails=false
>
> ?
>
> the size 4k is not a good idea if you don't need the thumbnails this large.
>
> and yes, you need to recreate your cache (delete ~/.cache/darktable/
> or wherever that is for you), and maybe you want to recreate them all
> at once from the command line (man darktable-generate-cache).
>
> -jo
>
>
> On Sun, Feb 14, 2016 at 6:53 AM, Lefty Ace <leftyga...@gmail.com> wrote:
> > Hello Darktable users!
> >
> > I have a problem trying to use the lighttable view and I wonder if you
> could
> > help.
> >
> > When I first import my raw files (Nikon NEFs), I can review them nicely
> in
> > the lighttable. Zooming to full screen gives me a nice looking image,
> and I
> > can use the left and right arrows to move through the current collection.
> >
> > After I edit an image, however, the preview shown in lighttable view
> looks
> > very bad. Even if I only change whitebalance, the preview is now very low
> > resolution. If I crop the image, the preview becomes absolutely
> terrible. It
> > is as though the preview is based on a VERY low resolution version of the
> > image.
> >
> > I have tried changing the setting "High quality thumb processing from
> size."
> > Originally it was 720p, I have set it to 4k, and I don't see a
> difference.
> > My monitor is 1920x1080, so 4k is more than enough resolution for
> > full-screen. Do I need to do something to apply the new setting to files
> > already in my library?
> >
> > My solution for now is to always export my images and then view the JPG
> > files with another program. But this means I cannot enjoy darktable's
> great
> > tagging and searching, since in order to see what the image actually
> looks
> > like I must export it.
> >
> > The slideshow mode almost solves my problem, but I cannot go backwards,
> only
> > forwards, and it is a little bit laggy since it is processing the full
> > image.
> >
> > Any suggestions or advice would be much appreciated!
> >
> >
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