Calculator
Introduction
Magnification
Depth of Field
Accuracy
References
Camera Lens Theory
How does the
lens magnification and depth of field calculator
work? Here is the theory behind it.
Introduction
Basic assumption
Lens Equation
Focusing distance
Lens Aperture
F-stop
Lens speed
Standard stop scales
Magnification
Minimum focusing distance
Approximation
Notation
Extension Tubes
Focusing distance and image distance
Extending the image distance
Effective focusing distance
Depth of Field
Slightly out of focus
Minimum acceptable sharpness
Near and far limits
Depth of field vs. aperture
Depth of field vs. magnification
Hyperfocal Distance
Approximation
Near limit
Practical considerations
Infinity Focus
Merklinger's approach
Practical considerations
Hyperfocal distance revisited
Accuracy
Magnification
Depth of field
References