A raw file has no sharpening applied by the camera. When you open a raw
file in programs like Adobe's Lightroom they automatically applied a level
of sharpness which is usually the unsharp mask approach. Darktable leaves
all of these adjustments to the users discretion. When you open a raw image
in Rawtherapee you will notice a progress bar along the bottom of the
screen for 'capture sharpening'. This is why you see the 'better' image
from Rawtherapee. I opened your image in both Darktable and Rawtherapee and
viewed them at 100% on a 43 inch 4K monitor. Yes, I can clearly see why the
Rawtherapee image looks better to you. It looks so much sharper because of
the capture sharpness.
In the end you have a choice of two great open source softwares to process
your raw files. I am really thankful to the developers of both of these
great programs. In my ideal universe I would love to see a marriage of both
of these programs (hint to the developers). They both have individual
strengths. For me Darktable wins out because I can localise adjustments
using drawn and parametric masks. These masks are so superior to any
masking or adjustment brush offered in Adobe's Lightroom. Rawtherapee only
does global adjustments to the whole image. Another advantage of Darktable,
especially when combined with masks, is the ability to do multiple
instances of the same module. For instance you could use the Contrast
Equalizer module to apply sharpness in one instance, then clarity in
another, then deblur in another, and finally denoise in another instance.
This module is based on wavelets and is an excellent tool for all of
these tasks.
In the end you have decide which of these two great programs gives you the
best results from your camera. But in terms of sharpness Rawtherapee
automatically applies some capture sharpness and Darktable leaves these
adjustments to the user.
cheers,
Terry
On Wed, 3 Feb 2021 at 02:26, Victor <[email protected]> wrote:
> I developed a raw image (DSC00662.ARW) taken with my sony a6600 with both
> DT and RT using minimal intervention (see attached DT xmp file and RT pp3
> file). As you can see from the details I enclosed in this message the RT
> resulting image looks by far better in terms of sharpness with respect to
> the DT one.
>
> Why is that and is there anything I can do to improve DT performance as
> far as sharpness is concerned?
>
> Here is the link to the dropbox directory containing all the relevant files
>
> https://www.dropbox.com/sh/2iojfjmnu9ronoa/AADu4kLIm_rD_L6AhXGvBUNMa?dl=0
>
> Ciao
>
> Vittorio
>
>
>
>
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