Expoaperture Depth Of Field Guide; Normal Lenses

The ExpoAperture Depth of Field Guide is the simplest and fastest way to determine the best aperture setting for selective focus in any situation with digital SLR, 35mm and medium format (120/220) cameras. It is calibrated to work with 18mm to 400mm focal length lenses. You can determine the maximum usable aperture and precise focus point for all depth-of-field circumstances. Gain better creative control over your images with the quick reference depth of field guide.

"As a tool for the teaching or learning of photography, the... Guide is peerless in assisting understanding of one of the most important and least understood areas in photography - depth of field. Because of the simplicity and clarity of its design, and its orientation, it is the best graphic aid in teaching depth of field that I have ever seen.

I have now taught several dozen beginning photographers from San Francisco State University the principles and application of depth of field and never in my teaching career have I found students to so quickly and profoundly understand the concepts and their application.

I have decided to totally delete the conventional depth-of-field tables from my textbook, and offer the... Guide as their sole and exclusive replacement."

Professor Neal White
Coordinator, Area of Photography
San Francisco State University, CA

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 ExpoAperture Guide provides an exceedingly simple, fast and convenient means for determining the right relative aperture number for use with film or digital SLR cameras, with a range of popular focal length lenses, and for a depth of field ranging from 12 inches to infinity.

Find out more at www.expodisc.com