In this book, I define and review the fundamental principles for depth of field (DOF) and hyperfocal distance (HFD, which I believe are poorly understood by some photographers.

This is a revised edition of a book I previously published on depth of field and hyperfocal distance. This new edition is nearly identical to the previous version, but I think is more clearly expressed than before.

... hyperfocal focusing to maximize the acceptably sharp focus from near to far in the frame. With hyperfocal focusing, the depth of field extends from half the hyperfocal distance to infinity at any given aperture. The easy way to set ...

... hyperfocal distance, both objects at infinity and at 1/2 of that hyperfocal distance will be in acceptable focus. Most lens charts will list the hyperfocal distance for various lenses at any given f/stop. (Remember, f/stops are used for ...

... hyperfocal subgroup is part of the hypercentre, and notice that each of the conditions (ii) and (iv) imply that S is a normal subgroup of G. Now it is easy to construct further examples of hyperfocal subgroups which are not part of the ...

... Hyperfocal Distance in Manual In the final two pages of this chapter , we get into the power of manual focus and how all of that is relative to light . Determining hyperfocal distance is a manual focus function . It is also one of the ...

... hyperfocal distance in metres exactly equals the focal length multiplied by the diameter of the aperture in centi- metres , one - tenth millimetre being the diameter of the circle of confusion . This is hardly such a convenient rule as ...

... hyperfocal subgroups of G, from which it is clear that the hypercentre, and hence any hypercentral subgroup, is hyperfocal. We have already discussed other examples of hyperfocal subgroups. Example 1 of $2 shows that a (hyper) focal ...

... hyperfocal focusing to maximize the acceptably sharp focus from near to far in the frame. With hyperfocal focusing, the depth of field extends from half the hyperfocal distance to infinity at any given aperture. The easy way to set ...