"There is a series of very nifty little guides that can clarify all of these issues, and more. Produced by FotoSharp, a series of 3x5 plastic-covered cards ... A few of those cards, and a nifty slide-rule type scale, directly address Depth of Field and also Hyperfocal distances."
McDonald Wildlife Photography
"I teach a photography course for 35mm, digital & film. I use FotoSharp hyperfocal cards & other kits with my students. They are easy to use and durable and are the best I have found."
Jeffrey C. Dixon - Hancock, NH
"Your guides are perfect for my classes."
Michael McCalman - Fairhope, AL
"The hyperfocal card customized to my digital camera is just perfect."
Carl Cullison - Loveland, OH
"The hyperfocal DOF cards have been a godsend. I especially like the example you site to help me understand."
A. Midgette - Denver, CO
"This was great. Will fit in camera bag & I hate math!"
Barb Beck - Union Grove, WI
"Your products are outstanding. Slip into my camera bag like a dream. One problem, they keep ending up in my friends camera bag."
Jerry Kranz - Castle Rock, CO
"Easy to use and understand guides - very practical."
Richard Pearse - Exeter, England
"Info on cards is organized well and easy to read."
Linda LeMay - Oakdale, MN
"Awesome. Will help me tremendously!"
L. Mickelberry - Marysville, WA