LESSON 17 · VALUE & LIGHT

A picture has to work as an arrangement of three value masses before it can work as anything else. This lesson teaches you to read and design that arrangement, and then hands you the skill almost nobody teaches explicitly: thumbnail iteration. You are going to make twenty bad thumbnails, and that is the entire point.

SOFTWARE

Finish first: L14, L16

• The thumbnail grid download, or a blank 2400x1800 canvas
• A timer
• One subject you actually want to draw - a scene, a character in a place, anything with a story in it

WATCH

Ctrl+Paint — The core lesson: quantity, speed, and the willingness to throw work away. This is the video the whole lesson is built on.

Ctrl+Paint — Explains why an even split of light and dark is the weakest possible arrangement.

Proko — A structured way to practise composition using existing artwork as your source material.

THE LESSON

Lesson 14 gave you five values for rendering a form. Composition works coarser than that: three. Light, middle, dark. If you cannot describe your picture in three masses - where the light is, where the dark is, and what shape the middle makes - the composition has not been designed, it has just happened.

This reduction has a name in Japanese design, notan, and the test is simple. Shrink your image until it is a couple of centimetres across, or squint hard at it, and see whether it resolves into a clear arrangement of a few big shapes. If it turns into an even grey field, the picture has no composition, regardless of how well individual objects are drawn.

The most common failure is even distribution. Roughly equal amounts of light, middle and dark spread evenly across the canvas gives no hierarchy - the eye has nowhere to go, so it goes nowhere. Give one value clear dominance, let a second support it, and let the third appear only as a small accent. A mostly dark canvas with one brilliant light shape has a focal point automatically. A canvas that is one third each does not.

The overall range you choose is the value key. A high-key picture lives in the light half of the scale - misty, bright, gentle. A low-key picture lives in the dark half - night, storm, threat. A mid-key picture stays in the middle and relies on small accents at either end.

Choosing a key is a mood decision made before you draw, and it constrains everything afterwards. A low-key painting does not mean everything is black; it means your light family sits around value 3, and the one small area of value 1 you allow yourself becomes enormously powerful. Restriction creates impact - the Lesson 14 principle of reserving pure white and black, applied to the whole picture.

Where the focal point goes is then a value question rather than a detail question. Put your greatest value contrast at the place you want the viewer to look, add your hardest edges there as well from Lesson 16, and the eye will go there whether the viewer intends it or not.

Here is the part that is rarely taught out loud. The skill in thumbnailing is not draughtsmanship, it is iteration - producing a large number of quick, disposable versions and keeping the best. Most people make one thumbnail, decide it is fine, and spend eight hours rendering their first idea.

Your first idea is almost never your best. It is your most available idea, which usually means the one you have seen most often - the composition everyone else thought of first too. Ideas four through twelve are where the interesting arrangements live, and you only reach them by passing through the boring ones. So the target is twenty, and most are supposed to be bad. Bad thumbnails are not failed work; they are the cost of arriving at a good one, at two minutes each.

Rules that make this work. Small: no bigger than 200 by 150 pixels. Fast: two minutes each, timed, and you stop when the timer stops. Three values only, straight from your swatches. Big brush, so detail is impossible. And the hard rule - never zoom in. Zooming in is how a thumbnail becomes a two-hour painting.

Do not judge as you go. Judging while generating kills the generating. Make all twenty first, and only then look at them.

After the first five, stop making them up from nothing and start changing one variable at a time. Take a thumbnail that half works and produce four versions of it, each altering exactly one thing.

Useful variables, in rough order of power: change which value dominates, letting the dark mass take the frame instead of the light one. Change the crop - move in until the subject is cut by the frame edge, or pull out until it is small in a large space. Move the horizon. Flip the light so it comes from behind. Change the key from mid to low. Invert the notan: light subject on dark ground becomes dark on light.

Digitally this is cheap in a way it never was on paper. Duplicate the thumbnail layer with Ctrl+J or Cmd+J, move it to the next cell, and modify it rather than redrawing. Ctrl+I or Cmd+I inverts a layer, giving you the reversed notan in one keystroke, and Free Transform tests a different crop in seconds.

When you have twenty, zoom the whole sheet out until each thumbnail is about the size of a postage stamp, or step back a metre from the display. The two or three that still read clearly at that size are your candidates. Nothing else matters at this stage - not neatness, not draughtsmanship, not how much you liked drawing it. Only whether it reads.

This is the last lesson in the Value and Light module, and everything in it points forward. A composition designed in three values gives you the map, the five-value system fills it in, form and cast shadow give each object solidity, and edge control tells the viewer where to look.

When Module 5 introduces colour, none of this gets replaced - colour sits on top of a value structure that is already sound. Keep your best thumbnail from today. You will paint it properly later.

PRACTICE · 40 MIN

1. Open the twenty-cell grid, or set up a 2400x1800 canvas with twenty cells at 200x150 each.
2. Load three swatches only: value 1, value 3 and value 5 from your L14 scale. No other values are permitted today.
3. Pick one subject and write it in the corner of the canvas - for example, a figure walking away down a corridor.
4. Thumbnails 1 to 5: invent freely. Two minutes each, timer running, brush large enough that no detail is possible.
5. Thumbnails 6 to 15: pick two of the first five and iterate. Change exactly one variable per thumbnail - dominance, crop, horizon height, light direction, or value key. Note the changed variable under each cell.
6. Thumbnails 16 to 20: use Ctrl+J to duplicate your best three so far, then invert one with Ctrl+I and re-crop the others with Free Transform.
7. Do not zoom in at any point. Do not tidy anything.
8. Set the sheet to Fit on Screen, stand back a metre, and mark the three that still read as clear shapes.
9. Redraw only the single best one at 1200x900, still in three values only, taking ten minutes.

Done when: Twenty completed thumbnails on one sheet, three of them marked as readable at postage-stamp size, and one enlarged three-value composition saved for the colour module.

Download these and work along with the lesson.

CHECK YOURSELF

Answer out loud first, then open each one to compare.