I have done that - in fact spent about 5 hours in total doing it. The
conclusion is that I can determine no consistent pattern of behaviour -
the auto apply conversion to monochrome is, for my environment and for
knowledge/experience level, quite simply unpredictable and unknowable,
but mostly non-functional, which tends to make one wary of using it.
I have had one instance where (all-1) raw images in a a newly imported
folder have been automatically set to monochrome. I could find nothing
in that one unconverted image which would have rendered it
non-qualifying for conversion. I could not reproduce the behaviour - all
subsequent attempts after a remove/re-import cycle failed to convert any
images.
Aside from that one folder I have found no folders which get completely
converted on import, even though the preset is enabled according to what
I see in the presets tab of the settings panel. This is irrespective of
the setting of "don't use embedded preview jpeg" in the lighttable
section of the GUI Options tab in the settings panel.
I have had numerous instances where a folder in which I had to convert
images manually and which folder I then subsequently removed and the
re-imported, had some of those images, which i had converted manually
prior to removal, automatically re-converted to monochrome on re-import,
but most of the others not.
For reasons unknown to me the specific monochrome prest I have defined
is sometimes highlighted in the list of monochrome presets, sometimes
not; I can only view that preset's parameters when it is highlighted but
doing so immediately turns on the monochrome module which defeats any
test I might be trying to conclude.
The bottom line is that this 'auto apply' feature is utterly confusing
to the 'non-IT-expert' user of Darktable. It is not explained in
adequate detail in the documentation. I am incapable of understanding
the explanations of or resolutions to my questions in this subscription
list. So where else do I turn to get an adequate understanding of how to
use DT in this specific activity (automatically convert to monochrome)?
On 20/07/2020 21:07, Patrick Shanahan wrote:
* tony Hamilton <[email protected]> [01-01-70 12:34]:
Beg pardon - my request was poorly formulated.
DT: 3.0.2
O/S:Linux Mint 20 Cinnamon
Module: Using 'monochrome' module (just as a test for my learning of DT)
Settings: I tried configuring a test preset in monochrome by using my mouse
to adjust the virtual color filter and then saving this as a preset with the
'auto apply this preset to matching images' option enabled.
I tried setting the individual selection parameters to match known images
('known' on the basis of data from the image information panel), but no
images, which I thought were 'matching', were converted to monochrome.
I tried setting the selection parameters to, effectively, 'select all', but
again no images were converted to monochrome when a folder is imported.
Conversion does take place when I open the darkroom on an individual image -
but only that image is converted. That is why I say the 'auto apply' acts
more like 'manual apply' . I would have to go through the process of opening
each image in darkroom individually to convert the whole film-roll. And that
seems like defeating the purpose of 'auto apply'.
So where is my understanding inadequate?
One question which comes to mind: when is the 'auto apply' action designed
to take place - when a *new* image/folder is first imported, or when an
image in an *existing* film-roll is selected in light-table, or when an
*existing* image is opened in darkroom?
On 20/07/2020 01:32, Patrick Shanahan wrote:
* tony Hamilton <[email protected]> [07-19-20 20:28]:
I have defined a preset and enabled the 'auto apply this preset to matching
images'. I find that the 'auto' part works only when I select the list of
presets for that module and click on the specific preset that I have
defined: i.e. I have to apply the 'auto' part manually. This applies no
matter how 'wide' I set the parameters for the preset. What am I failing to
understand ?
dt version
operating system
which module and what parameters
Why don't you make some test images and determine for yourself what
happens and when?
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