85 Zoom Quantization. 85 of 95.
85/CAMERA BEHAVIOR/85 of 95
Zoom Quantization
Zoom can settle on deliberate steps.
Best experienced with a pointer.
The problem
Continuous wheel zoom lands on awkward fractions like 113%, making alignment and muscle memory harder.
The solution
Quantized steps make zoom predictable and align with design grids.
Experiment
Play with the values
0.25
0.0015
How it works
- Wheel or pinch input arrives as a continuous delta.
- That delta accumulates into a proposed scale.
- The proposed scale snaps to the nearest deliberate step.
- Only the quantized zoom is applied, so the view settles on predictable levels.
- The step is shown as a percentage so the user can see which level they landed on.
Seen in
Document viewers
PDF and slide apps jump between familiar percentages instead of float scales.
Design tools
Canvas zoom snaps to steps that match pixel grids and export sizes.
Code editors
Font zoom cycles through discrete sizes for readable, repeatable layouts.
Photo apps
Preview zoom lands on 50%, 100%, and fit rather than arbitrary fractions.