In the app
The sensor size sets the circle of confusion — every result depends on it.
Halves the CoC for large prints and pixel-level sharpness. Depth of field gets shallower.
Thin-lens depth of field (the same model lens makers use for their scales): H = f²/(N·c) + f. Distances are measured from the sensor plane.
- Say what must be sharp; get the focus distance and f-stop.