ExpoImaging ExpoAperture2 Manual (Imperial/Standard) - Manual (Page 12)

ExpoAperture 2 Depth-of-Field Guide Manual
V 1.0
12
The following chart shows the focal length of the lens markings on the dial.
Focal Length Dial Markings
15 15mm 45 45mm
● 16mm 50 50mm
● 17mm ● 55mm
18 18mm 60 60mm
20 20mm 70 70mm
● 22mm ● 75mm
24 24mm ● 80mm
28 28mm 85 85mm
● 30mm ● 90mm
35 35mm ● 100mm
● 40mm 105 105mm
● 42mm ● 120mm
45 45mm 135 135mm
2.D - f/stop and Circle-of-Confusion Dial
This dial contains two scales, one scale for the f/stops(blue)
and one for the circle-of-confusion(green).
The f/stop scale is calibrated in ⅓ stop increments from f/1
to f/64. It is used in conjunction with the Focus Zone Dial
to determine the number of zones in focus at a particular
f/stop or the f/stop to use in order to obtain the desired
number of zones in focus.
The Circle-of-Confusion, sensor size, or film format is set
using the green portion of the dial and by rotating the Focal
Length Dial until the correct setting shows through the cutout.
The following charts show sensor sizes and film formats for many popular makes and
models of cameras. If your camera is not included on this chart, please refer to your
camera’s manual which should include the sensor format or film size in the specifications
section.