Lesson 7 of 8
Iterate One Variable at a Time
Controlled iteration is faster when you change one major variable while keeping the rest stable.
Active reading
Understand the idea
Lock subject, composition and palette, then test lighting. After lighting is chosen, keep it fixed and test lens or styling. This makes cause and effect visible.
Example
Generate four versions that differ only in lighting: soft window, hard noon, neon edge and overcast.
Practice
Apply this lesson to one real task you already have, then write down how you would verify the result.
Common mistake
Changing subject, camera, lighting and style together, then not knowing which change improved the image.
Key takeaway
Controlled variation turns image generation from guessing into testing.