[darktable-user] Re: darktable not honouring 'open with darktable'

2020-06-20 Thread Terry Duell
No responses to my question, so I'll give this a little bump, if that's OK.

On Fri, 2020-06-19 at 09:52 +1000, Terry Duell wrote:
> Hello All,
> I've recently noticed that when I select an image file and choose 'Open with
> darktable', darktable doesn't open on screen as it does if I choose darktable
> from the apps menu, instead it is added to the lower icon bar and does not
> respond.
> 

darktable used to respond OK when selecting 'open with darktable', but I can't
point to how long ago that was.
I also note a post to Pentaxforums, in 2016 I think, which noted the
following...

"BTW, you can open single files in darktable by right clicking an image file and
using the "open with" dialog."

Is this a local problem that I've got with my system, or can others report
similar behaviour?

I am running release-3.1.0-2310-g890bf49f0 on Fedora 32.

Cheers,
-- 
Terry Duell 


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Re: [darktable-user] Can I invoke an external programme from DarkTable

2020-06-20 Thread Terry Pinfold
I have installed plugins for GIMP before. Reasonably easy but what does Lua
stand for and how do I incorporate it into DT. I googled the Lua to
activate GIMP but to me it seemed to be a load of text and I was unsure
what to do with it. Advice appreciated.
Thanks

On Fri, 19 Jun 2020 at 22:00, Pascal Obry  wrote:

> Le vendredi 19 juin 2020 à 08:03 -0300, Guillermo Rozas a écrit :
> > > I find a frequent need to invoke Photoshop as part of my workflow when
> > > using LightRoom and assume this requirement might still exist if I
> > > switch to DarkTable. Is there a way to invoke any 'external' programme
> > > while working in DT ?
> >
> > Short answer: no (or 'not yet')
>
> There is some Lua plug-ins to launch GIMP for example. This breaks the
> workflow (as does Lr & Photoshop) but it exists.
>
> --
>   Pascal Obry /  Magny Les Hameaux (78)
>
>   The best way to travel is by means of imagination
>
>   http://www.obry.net
>
>   gpg --keyserver keys.gnupg.net --recv-key F949BD3B
>
>
> 
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-- 
Dr Terry Pinfold
Cytometry & Histology Lab Manager
Lecturer in Flow Cytometry
University of Tasmania
17 Liverpool St, Hobart, 7000
Ph 6226 4846 or 0408 699053


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Re: [darktable-user] Can I invoke an external programme from DarkTable

2020-06-20 Thread Remco Viëtor
On samedi 20 juin 2020 14:47:22 CEST Anton Aylward wrote:
(...)
> 
> My first thought on seeing the original question was "yes, but why? this is
> DT not LR".  I'm a Linux user and not conversant wit those windows tools in
> detail but it occurs to me that what PS is doing is 'layers'.  Is that the
> specific requirement? As you say, Guillermo, DT's tools are powerful.  I
> have a number of books that notionally describe working in PS but I have no
> problem mentally translating them to work in DT.

Basically, DT is a parametric editor that works on one image: you describe the 
transformation, possibly with a mask to limit the area to which it is applied. 
That works for a lot of the required editing, but sometimes you need to be 
able to work with pixel precision, or with several files at once. 

And that's where programs like krita, Gimp and PS come in. Creating a very 
precise mask for e.g. dodging and burning is a lot easier in such programs 
than it is in DT, as you can literally paint (a mask) pixel by pixel. Also, 
things like adding precisely placed text is relatively easy. 
The down-side of that is that the image files they need can get very large. 
And you almost need a graphics tablet to comfortably work with that precision.

Layers are needed for some jobs (like making composites) and handy for others, 
but they are not the critical difference.

Remco




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Re: [darktable-user] Can I invoke an external programme from DarkTable

2020-06-20 Thread Anton Aylward
On 19/06/2020 07:03, Guillermo Rozas wrote:
> 
> I find a frequent need to invoke Photoshop as part of my workflow when
> using LightRoom and assume this requirement might still exist if I
> switch to DarkTable. Is there a way to invoke any 'external' programme
> while working in DT ?
> 
> 
> Short answer: no (or 'not yet')
> 
> Long answer:
> 
> DT has some local retouching tools (like cloning and healing) and a very 
> powerful
> masking system that allows you to apply any tool to very specific portions of 
> the
> image. This usually negates the need for an external program like Photoshop 
> for
> most people.

Yes.

My first thought on seeing the original question was "yes, but why? this is DT 
not
LR".  I'm a Linux user and not conversant wit those windows tools in detail but 
it
occurs to me that what PS is doing is 'layers'.  Is that the specific 
requirement?
As you say, Guillermo, DT's tools are powerful.  I have a number of books that
notionally describe working in PS but I have no problem mentally translating 
them
to work in DT.

I'd like to ask the OP about how the LR-PS-LR process re-imports the image back
into LR after PS has tweaked it.

-- 
"Minds are what brains do."
  -- Marvin Minsky

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