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## Depth of Field EquationsHyperfocal distance, near distance of acceptable sharpness, and far distance of acceptable sharpness are calculated using the following equations (from Greenleaf, Allen R., Hyperfocal distance: Near distance of acceptable sharpness: Far distance of acceptable sharpness:
f-number is calculated by the definition i = 1, 2, 3,... for f/1.4, f/2, f/2.8,...Calculations using these equations must use consistent units. When focal length and circle of confusion have units of millimeters, the calculated hyperfocal distance will have units of millimeters. To convert to feet, divide ©2003 Don Fleming. All rights reserved. Privacy Policy |