How does diamond-painting size affect detail?
At the planner's 2.5 mm pitch, a 20 × 30 cm image has 80 × 120 cells: 200 ÷ 2.5 and 300 ÷ 2.5. That is 9,600 positions, not 9,600 colours. A face occupying a small part of the photo receives fewer cells still. This illustrates the planner grid, not a universal size for all drills.
