Thanks Roman.
Indeed, I had seen that in the release notes, and testing it is definitely on
my to-do list. I actually have a set of 800 images taken without the Ramperpro
(only the auto exposure of the camera) that are a good test-case. They
correspond to a sunrise, which is a typical scenario where the Ramperpro
shines. I prepared the timelapse as-is and flickering is obvious. I corrected
the exported JPGs with timelapse-deflicker perl tool
(https://github.com/cyberang3l/timelapse-deflicker), and flickering is reduced.
And now I must try the automatic mode of DT 2.0 and compare!
Thank you again.
d
De: "Roman Lebedev" <lebedev...@gmail.com>
À: "Denis Testemale" <de...@testemale.name>
Cc: "darktable-users" <darktable-users@lists.sourceforge.net>
Envoyé: Dimanche 7 Février 2016 15:00:24
Objet: Re: [Darktable-users] Import Adobe compatible xmp sidecar
On Sun, Feb 7, 2016 at 4:52 PM, Denis Testemale <de...@testemale.name> wrote:
> Hello!
Hi.
> I'm using a very useful timelapse controller (named Ramperpro from
> ElysiaVisuals, based on a RaspberryPi if I'm correct). The general idea is
> that it takes full control of the camera but above all it generates a
> sidecar xmp file with an exposure correction included for each picture
> taken. That way, when all the pictures are exposure-corrected the transition
> from one to the next is smooth, which suppresses any flickering in the
> resulting timelapse.
Actually, you can do that natively in darktable :)
Using mode = automatic in exposure module.
Please see:
https://youtu.be/VJbJ0btlui0?t=8m10s (from 8m10s to 11m17s)
https://www.darktable.org/usermanual/ch03s04.html.php#exposure
> Until now, I've been using AftershotPro to do this
> because the developper of the Ramperpro was kind enough to include this
> option in the firmware: with the option on, an xmp "Bibble Labs and
> AftershotPro" -compatible sidecar file is created alongside the
> Lightroom-compatible sidecar file (which I discarded). Good.
> Now I want to use Darktable to do the job, and if I'm not mistaken, one of
> the few image operations that Darktable can import from a sidecar file
> generated by another program (such as Lightroom) is exposure. I take this
> information from here:
> http://www.darktable.org/usermanual/ch02s02s08.html.php
> But I cannot make it work and I'm wondering if I'm doing something wrong and
> if you could help me. With the links at the bottom of this message you can
> download one NEF file and the sidecar Lightroom-compatible xmp file
> generated by the Ramperpro. Would somebody be kind enough to try and tell me
> if the exposure correction is active once in Darkroom mode? The correction
> should be "0.08170" as indicated in the xmp file that I also copy paste
> here:
>
> <x:xmpmeta xmlns:x="adobe:ns:meta/" x:xmptk="Adobe XMP Core 5.5-c002
> 1.148022, 2012/07/15-18:06:45">
> <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";>
> <rdf:Description rdf:about=""
> xmlns:crs="http://ns.adobe.com/camera-raw-settings/1.0/";
> crs:Exposure2012="0.08170">
> </rdf:Description>
> <rdf:Description rdf:about=""
> xmlns:lrt="http://lrtimelapse.com/";
> lrt:ExternalExposureDefault="0.08170">
> </rdf:Description>
> </rdf:RDF>
> </x:xmpmeta>
>
> I'm wondering if there is a format problem in this file, or if I miss
> something in the importing steps in DT, or if I'm stupid, or a bit of
> everything...
>
> Thanks
> denis
Roman.
>
> The download links:
> - the NEF image:
> https://framadrop.org/r/MTjT3yiXFR#m26JtqUdih2lusXv1rU8N7Imuzc28ik965nuRS2qg4E=
>
>
> - the sidecar file:
> https://framadrop.org/r/pPf3ZC7Qgg#T/yzb2BNX9hkpi9e6mo8OiNmHfSDnfQ63TlclcA0rLM=
>
>
>
>
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