---
title: Quick Study
link: https://simonwillison.net/2026/Oct/23/quick-study-painter/
source: simonwillison-net
published: 2026-10-23T21:35:13Z
updated: 2026-10-23T21:35:13Z
first_seen: 2026-10-24T00:30:03.664601594Z
labels:
- tools
summary: 'Tool: Quick Study Prompt to Claude Opus 5.5 High: Build an artifact where you open a photo and it rapidly (in a few seconds) paints a version of that photo using a canvas element and simulated paintbrush See also my previous experiment getting Claude Fable to simulate a watercolor illustration with P5.js. Quick Study uses Sobel edge detection, with no external libraries beyond Google Fonts. Tags: tools'
content: extracted
html: 2026-10-23-quick-study.html
remote_preview:
  url: https://static.simonwillison.net/static/2026/heron-oil.webp
  alt: A simulated oil painting of a photograph of a heron
---

Prompt [to Claude Opus 5.5 High](https://claude.ai/share/71adda96-193f-4f2a-97c0-454e08066afb):

> `Build an artifact where you open a photo and it rapidly (in a few seconds) paints a version of that photo using a canvas element and simulated paintbrush`

See also [my previous experiment](https://simonwillison.net/2026/Aug/25/pelican-watercolor/) getting Claude Fable to simulate a watercolor illustration with P5.js.

![A simulated oil painting of a photograph of a heron](https://static.simonwillison.net/static/2026/heron-oil.webp)

Quick Study uses [Sobel edge detection](https://en.wikipedia.org/wiki/Sobel_operator), with no external libraries beyond Google Fonts.

Posted [23rd October 2026](https://simonwillison.net/2026/Oct/23/) at 9:35 pm