RUTch
14th April 2004, 17:54
Question
My lens doesn't have depth-of-field scales. How do I calculate the hyperfocal distance?
Answer
For any Nikkor lens that does not have a depth-of-field scale, hyperfocal distances can be calculated manually for any focal length and aperture combination by using the formula:
H = f2 / F (0.033)
where "H" is the hyperfocal distance in mm, "f" is the focal length, and "F" is the aperture.
For example, with a 50mm lens set at f/8, H = 50x50 / 8 x 0.033, so H is 9470mm (9.47 meters or approximately 31 feet). Setting the focus on the lens to this distance will render subjects from half this distance to infinity acceptably sharp.
My lens doesn't have depth-of-field scales. How do I calculate the hyperfocal distance?
Answer
For any Nikkor lens that does not have a depth-of-field scale, hyperfocal distances can be calculated manually for any focal length and aperture combination by using the formula:
H = f2 / F (0.033)
where "H" is the hyperfocal distance in mm, "f" is the focal length, and "F" is the aperture.
For example, with a 50mm lens set at f/8, H = 50x50 / 8 x 0.033, so H is 9470mm (9.47 meters or approximately 31 feet). Setting the focus on the lens to this distance will render subjects from half this distance to infinity acceptably sharp.