ZoneView

ZoneView makes it possible to view scene in terms of under and over exposed areas when photographing on film. It shows you EV100 exposure values OR difference in stops to select area of the preview.
This app uses your phones camera to analyze the lightning values.
It also works as light measurement tool - showing the exposure for manual film camera users for example.
Click on a rectangle to compare that area to other areas in the scene to understand how different areas are exposed. The exposure measurement is calculated from selected rectangle area when this mode is selected.
Features:
- Grid based exposure and stop difference analysis
- Exposure/light measurements (aperture priority)
- Grid size configuration
- Under / over exposure limit configuration