Film Size = .029

Focal Length [mm] =

f/Stop [mm] =

Focus Distance in Feet or Meters? = 1000

Focus Distance =

Hyperfocal Distance =

Near Focus =

Far Focus =

Total =

". . .hyper-focal distance is the closest distance at which a lens can be focused while keeping objects at infinity acceptably sharp.". --Wikipedia

In these modern electronic days, knowing the hyper-focal distance of a given camera/lens is not really necessary. However, pickup an old school camera like the Holga and this tool tool suddenly becomes most necessary! Serious photographers know how to use precision focus with their photographic compositions. They instinctively use the out of focus portions to their advantage. Rookie photographers can benefit from this little calculator to improve their photography.

The formulas used here come from Greenleaf, Allen R., Photographic Optics, The McMillan Company, New York, 1950, pp.25-27.

Contributed by Henry Chavez.

A camera with a digital APS-C sensor, a 50 mm lens, using an aperture of f/16 and focused at 5 feet will have a hyper-focal distance of 28.64 feet. Remember, the hyper-focal distance measurement is when the lense is focused at infinity. In our example here, we are focused at 5 feet. This means the nearest point of focus will be 4.27 feet. While the furthest point of focus will be 6.02 feet. The total area of focus will be 1.75 feet.

Film Size

Focal Length [mm]

f/Stop [mm]

Focus Distance in Feet or Meters?

Focus Distance

Hyperfocal Distance

Near Focus

Far Focus

Total

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