Ideal Camera Lens Geometry Workbench

How to use Ideal Camera Lens Geometry Workbench

Field angles use the sensor dimensions and focal length at infinity. Finite-focus image distance follows the thin-lens equation. Near/far object limits solve an entered image-plane blur-circle bound using the entrance pupil f/N; returned finite boundaries are checked against that circle.

1. Enter sensor width (mm), sensor height (mm), focal length (mm), f-number n, entered circle of confusion (mm), focus distance from ideal lens plane (m).
2. Choose the stated convention and check the units and supported model.
3. Calculate, inspect the result, then copy or download it.

Good to know

• Sensor width/height 0.1–1000 mm, focal length 0.1–10000 mm, f-number 0.1–128, circle of confusion 0.000001–1 mm, and focus distance 0.001–1000000 m strictly beyond focal length. Approximate paraxial thin-lens geometry with unit pupil magnification only. Field angle is the infinity-focus convention; lens distortion, focus breathing, diffraction, aberrations, subject motion and actual perceptual sharpness are excluded. null far limit means the ideal bound extends to infinity.
• Local calculation only; no input persistence or external lookup. Text/JSON is limited to 30000 characters and output to 1000000 characters. Numeric model inputs and precision/work limits are stated on this page. Approximate JSON numbers retain full stored values; exact arithmetic outputs retain decimal or fraction strings. Unsupported states fail explicitly.
• Educational user-assumption arithmetic only. No live prices, laws, tax rules, quotes or financial advice.