Deciding the look once, in writing

Why this needs a document

Over thirty shots generated across several sessions, taste drifts. Monday’s shots are cooler than Thursday’s. A shot generated after looking at a reference is greener than the one before it. None of the drift is visible while you work and all of it is visible on the timeline.

The fix is the same one productions have always used: decide the look once, write it down, and refer to the document rather than to your memory.

What goes in it

Seven lines. It fits on a card.

LOOK — project name
1. PALETTE: desaturated, cool shadows, warm skin. No pure blacks.
2. CONTRAST: medium-low. Lifted blacks, no clipped highlights.
3. LENS: 35mm wides, 85mm anything closer. Shallow focus throughout.
4. TEXTURE: light 35mm grain over the whole timeline, added in the edit.
5. MOTION: low. Slow moves only. No handheld except shots 12 and 19.
6. TIME: late afternoon throughout. Sun low, from the west.
7. FORMAT: 16:9, 24fps, delivered 1080p.

Every one of those is a decision you would otherwise make thirty times, differently.

Look references, and how to use them without copying

Collect three to five reference frames from existing work that has the look you want: a film still, a photograph, a painting. Put them on one page.

Use them as a target to check against, not as a thing to feed into a model. The distinction matters practically and ethically. Practically: a reference image fed as style conditioning brings its composition and its subject matter along with its palette, which is rarely what you want. Ethically: deriving a palette and a contrast approach from existing work is normal craft, and generating output designed to reproduce a specific living artist’s recognisable style is a different act with contested legal status, dealt with in the final module.

The safe and better workflow: look at the reference, describe what you see in words (“cool shadows, warm skin, lifted blacks, soft key”) and put those words in your look file. You have extracted the decision rather than the image.

Applying the look at three stages

You can put the look into the piece in three places, and doing it in the wrong one costs you.

In the still. Colour, contrast and lens character baked into each first frame. Strong, consistent, and expensive to change: if the client wants it warmer, you regenerate everything.

In the prompt. Weak and variable. Useful as reinforcement, useless as the only mechanism.

In the grade. One adjustment layer across the whole timeline in the editor. Weakest control over what the shot contains, total control over how it looks, and changeable in thirty seconds at any point.

The working answer is neutral stills, unified grade. Generate frames that are correctly exposed and reasonably neutral, then put the look on in the edit. It keeps the expensive stage flexible and the cheap stage decisive, which is the same principle as the whole course.

The exception is anything stylised enough that the model has to know about it: a clip meant to look like gouache, or like 1970s film stock with bloom and halation. That has to be in the still, because no grade invents it.

Grain, once, at the end

A single grain pass over the finished timeline does more for cohesion than any other single operation, and the mechanism is worth restating: the autoencoder removed real texture, so every clip has the same suspiciously smooth surface. One grain layer gives them all the same new surface, which the eye reads as one medium rather than thirty renders.

Do it once, on the whole sequence. Doing it per clip gives you thirty slightly different grains, which is worse than none.

The free path

A text file, a page of reference images, and DaVinci Resolve’s free tier for the grade and grain. Kdenlive and Shotcut will do a simple grade and a grain overlay. On a phone, CapCut has filters and a grain overlay and will apply one to every clip, which is crude and serves the purpose.

Today: write the seven lines for whatever you are working on, then check your last three generations against them and note where you have already drifted.