ExpoImaging ExpoAperture - Manual (Page 5)

5
1. Introduction
The ExpoAperture Depth-of-Field Guide allows the
photographer to obtain the greatest possible image sharpness
where he wants this sharpness and to determine where that
zone of maximum sharpness will begin and end.
The Depth-of-Field Guide provides an exceedingly simple,
fast and convenient means for determining the correct
relative aperture setting for use with 35mm film or digital
SLR cameras, with a popular range of focal length lenses,
and for a depth-of-field ranging from 12 inches to infinity.
We have included many graphic examples on the following
pages to help you quickly learn to use your new ExpoAperture
Depth-of-Field Guide.
NOTE: The ExpoAperture guide can be used as is with
35mm and digital SLR cameras with full frame sensors.
If you have a digital SLR camera with a 1.6 or 1.5
equivalent focal length, please refer to the enclosed
Focal Length Conversion Table to determine the focal
length setting to use on the ExpoAperture guide. If you
are using the guide with 120/220 film use the enclosed
Medium Format Film Instructions.