ƒ/Calc Manual

Warren Young

August 19, 2013


Table of Contents

1. Introduction
2. ƒ Number Arithmetic
3. Depth of Field
4. Hyperfocal Distance
5. Field of View
6. Angles of View
7. Magnification
8. Spot Meter Viewing Angle
9. The Lens Advisor
10. The Lens Editor
11. The Imaging Area Editor
12. How ƒ/Calc Handles Aperture Values
13. What Is Meant by “Subject Distance”?
14. Circle of Confusion
15. Program Settings
16. Feature Wish List
17. Glossary
18. Credits and Acknowledgements
19. License

List of Equations

2.1. convert aperture value to number of stops from ƒ/1.0
2.2. convert number of stops from ƒ/1.0 to aperture value
3.1. near edge of in-focus field
3.2. far edge of in-focus field
4.1. hyperfocal distance
5.1. field of view
6.1. angle of view
7.1. lens magnification
8.1. spot meter diameter