Extend Darktable’s functionality by compositing with the watermark module
In this video tutorial I look at compositing with the watermark module. The procedure is simple but powerful. Here's how it works:
Darktable's watermark module allows you to overlay an svg file on the current canvas. I find 8mb to be the current upper limit on the file size of the svg in order for Darktable to import it properly. A bitmap image can be converted into an svg file by using inkscape like this:
inkscape -f filename.jpg -l filename.svg
It's that simple. The svg file needs to be located in
Blending can be accomplished with the usual suite of blending operators (drawn and parametric).
* note: in this video I use the Raw black/white point module... but that is probably not a good idea. The exposure module is the much preferred solution!
The RAW file used in this video is available here. Thank you fatdunky for the contribution 🙂
Quick rundown on various methods of adjusting tone and color in Darktable. Then a sneak peek at my 1 shot HDR technique.
In the video I start with a quick survey of different Darktable modules that you can use to set exposure, gamma, color balance and saturation.
With this week's Edit My RAW I get to use an experimental technique I'm working on for challenging captures. It's a lot like a single shot HDR, but with a wide range of applications. The enfuse command line I use in this video is:
enfuse-mp -o hdr.tiff –exposure-weight=1 –entropy-weight=0 –saturation-weight=0 *
Thanks Juan for the RAW contribution and your translation work. Find Juan's blog here
Video processing with Darktable
Thursday evening I hiked down to the lava’s ocean entry. This video was shot at 24fps 1/50sec 100mm F/2.8 ISO 400.
I split the AVCHD file into png frames using
avconv -i 00000.MTS -ss 20 -t 40 -r 24 -f image2 %04d.png -i 00000.MTS: is the filename -ss 20: start at 20 seconds in -t 40: end at 60 seconds in -r 24: originally recorded at 24fps -f image2: needed for png output %04d.png: 4 digit zero pad output file names
Then I uploaded one of the frames into Darktable and did 2 passes of editing.
What is the difference between Darktable’s overlay and softlight blend modes?
Overlay adds contrast and softlight is a more gentle version. In this video tutorial I dive deeper into the questions I get asked most often about how I utilize Darktable's lowpass and highpass modules. I show different effects realized by combining them with overlay and softlight blend modes.
After the discussion and examples, I get to edit a contributor's RAW file. Thanks Sergei for the beautiful shot to work with.
Here is the link to the Darktable.org blog post "Using lowpass filter to recover shadows"
- Red Hair
- Lab Color Chart
- Parametric Masks
- Compositing with Darktable
- 1 Shot HDR
- Ocean Entry Lava Video
- Lowpass, Highpass and how I use them
- Hamakua Waterfalls
- Another Windward Sunrise
- Lightning Storm
- Milky Way and Palm Trees
- Lush Glen in Scotland
- Blownout Highlights
- Windward Sunset
- Sunrise Waves
- Washington Bridge
- Sunset on Mauna Kea