What it frames
The Leica SL3-P with the Laowa 55mm f/2.8 Tilt-Shift 1X Macro, over a 1.75 m person in a street, with a door, a parked car and buildings. Everything is drawn to scale: the solid frame is what the camera takes in, the dashed ones are 24, 50 and 135mm on full frame from the same spot.
55mm on the Leica SL3-P frames 3.27 m × 2.18 m at 5 m: like 55mm on full frame, 36° across.
The numbers
- Frame at 5 m3.27 m × 2.18 m
- Full-frame equivalent55mm
- Angle of view36° × 25°, 43° diagonal
- Depth of field at f/2.84.42 m to 5.76 m (1.34 m)
- Depth of field at f/83.63 m to 8.03 m (4.4 m)
- Hyperfocal at f/2.837.5 m
- Hyperfocal at f/813.2 m
- Circle of confusion0.029 mm
How it is worked out
The frame at a distance is distance × sensor size ÷ focal length, across and up; the angle of view is 2 × atan(sensor size ÷ (2 × focal length)). Depth of field uses the thin-lens formulas: the hyperfocal distance H = f² ÷ (N × c) + f, the near limit s(H − f) ÷ (H + s − 2f) and the far limit s(H − f) ÷ (H − s), sharp to infinity from H on, with a circle of confusion c of the sensor diagonal ÷ 1500 and, on a zoom whose aperture changes, the maximum aperture taken linearly between its ends. These are for a rectilinear lens; a fisheye takes in more. Ask for this page with Accept: application/json for the numbers alone.