scene
foreground 1.74 m subject 3.00 m background 6.60 m
image
85 mm
f/2.0

exposure multiplier: 2.0x vs f/2.8

88.8 mm
1/125 s
100
Portrait reach 85 mm effective
sensor wide field s' = 88.8 mm
Wide
Tele
near 1.97 m
far 2.03 m
DOF 6.36 cm
2.00 m
s focus distance range
-0.044x
m bar uses |m|
42.5 mm
D opening size
0.629 mm
c(z) marker = CoC threshold
6.36 cm
DOF relative to focus distance
120.5 m
H reference ceiling

magnification vs. subject distance

Bar values show the signed image flip, but this plot shows |m|.

depth of field

The shaded span stays at or below the chosen circle of confusion.