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GUIDE · DARKTABLE II / II

Darktable II · Developing recipes

Step-by-step fixes for the 5 most common problem photos + black and white

Prerequisite: master the 5-module workflow from guide I. Each recipe states the problem, the diagnosis and the exact moves. Recipe format: module → control → direction.

RECIPE 1

Blown-out sky

Beach day or landscape with a white sky RECOVER HIGHLIGHTS

Classic number 1. If the RAW still holds information (white area but not pure white), it can be recovered. The histogram gives it away: a mountain chopped off against the right edge.

BEFORE: WHITE SKY
First check whether there's anything left to save: press O in the darkroom (overexposure warning) — the areas marked in red are pure white beyond rescue; if the sky isn't fully marked, there's something to work with.
exposure → lower slightly (−0.3 EV) if the whole photo runs bright
filmic rgb · scenewhite relative exposure → lower until the sky gets its texture back
filmic rgb · reconstruct → if a white patch remains: raise the threshold gently
color balance rgb → a touch of chroma to bring the blue back
Done when the sky has gradation and clouds where there used to be a white bedsheet.
RECIPE 2

Crushed shadows

Dark face against the light, gloomy interior LIFT SHADOWS

The opposite case: the subject came out black because the camera metered for the bright background. At low ISO, the a6000's RAW easily takes a 2-3 stop shadow lift.

SUBJECT IN BLACK
Diagnosis with the histogram: mountain flattened against the left edge. After lifting shadows, noise almost always surfaces: the recipe deals with it at the end.
exposure → raise until the subject is visible (+1 to +2 EV), ignoring the background blowing out
filmic rgb · scenewhite relative exposure → raise to tame the background you just blew out
shadows and highlightsshadows +20…+40 if it's still not enough
denoise (profiled) → switch on: lifting shadows always digs up grain
Done when you can see the subject's face without the photo looking like CCTV footage.
RECIPE 3

Dull colors

Grey day, bland photo CONTRAST AND COLOR

RAW files always come out flatter than the camera's JPEG: that's normal, it's raw material. This recipe is the universal "seasoning".

FLAT → VIVID
Order matters: first contrast (separates the tones), then color (the separated tones already look livelier and need less saturation).
filmic rgb · lookcontrast → raise from 1.0 to 1.2–1.4
color balance rgbglobal vibrance +10…+20 (protects skin tones)
color balance rgb · perceptual → if the greens/blues want more: global chroma +5
local contrast → switch on with the defaults: adds "presence"
Done when the developed photo beats the camera JPEG placed next to it.
RECIPE 4

High-ISO noise

Night or indoor photo at ISO 3200-6400 DENOISE

The a6000's practical limit. The goal isn't to erase all the grain (that looks plasticky), but to leave it fine and pleasant.

COLOR NOISE
There are two kinds of noise: luminance (grey grain, tolerable, even pretty) and chrominance (colored specks, always ugly). Priority: kill the color noise, keep some of the grain.
denoise (profiled) → switch on (it knows the a6000's sensor)
  → mode non-local means if the default eats detail
  → strength: start at the default, lower it if skin looks like wax
100% view → always judge noise zoomed in (double-click), never on a thumbnail
Done when the ISO 6400 photo can be shown without apologising for it.
RECIPE 5

Crooked horizon and falling lines

Buildings that lean backwards PERSPECTIVE

When you shoot a building from below, the verticals converge. At 16 mm the effect is exaggerated. Darktable fixes it in two clicks.

STRAIGHT VERTICALS
First make sure lens correction is on (the 16-50's distortion skews the perspective). Then:
rotate and perspectiveget structure (wand icon) → detects the lines by itself
  → vertical correction → apply
crop → remove the empty edges the correction leaves behind
Field trick: leave air around the building when shooting, knowing the correction will crop
Done when the buildings in your photos stand up straight.
RECIPE 6

Black and white with intent

The B&W that isn't a filter MONOCHROME

Removing the color doesn't make a good B&W photo: you have to decide which grey each color becomes. It's the most creative recipe on the list.

CHOOSE THE GREYS
The best B&W candidates: backlit scenes, textures, portraits with character and photos where the color distracts instead of adding.
color calibrationgrey tab → enables channel-mixer B&W
  → raising red brightens skin · raising blue darkens skies (drama)
filmic rgb · lookcontrast 1.3–1.5: B&W asks for more punch than color
vignetting → subtle (−0.2), to close the eye in on the subject
Final mission of the course: pick your best photo from the last two months and develop it twice — one color version and one B&W — then argue in front of the family which of the two is "the one" and why. If you can defend a develop, you know how to develop.
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