Phase One IQ2 User's Guide download pdf (Page 117)

117

9.12 Depth of Field

Depth of eld (D.O.F.) is dened as the zone of sharpness before and

behind the plane of focus. It depends on distance to subject, focal

length of lens, aperture setting and distance the lens is focused at.

In addition to visual observation via the depth of eld preview button,

the D.O.F. can be determined by using the depth of eld scale on each

lens. The f/stop numbers appear on both the right and left side of the

white index mark in the center of the scale. Simply read the gures

which appear above the f/stop numbers on the distance scale of the

lens.

Depth of Field Preview Button

When the preview button is pressed in, the depth of eld for the aperture

set on the camera can be checked by looking through the viewnder.

After focusing, press the preview button. The diaphragm will be stopped

down to the set aperture.

Web Resources

http://www.cambridgeincolour.com/tutorials/depth-of-eld.htm

http://en.wikipedia.org/wiki/Depth_of_eld

NOTE:

While operating the preview button,

you cannot release the shutter

When the aperture is open (the subject depth is small)

When the aperture is stopped down (the subject depth is large)

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Phase One IQ2 User's Guide Page 117