DoF and hyperfocal distance calculators and charts

On Tue, 30 Dec 2008 17:05:59 GMT, "Dudley Hanks"
wrote:

[snip]
>Once again, are you sure? Could not the logic of the firmware be
>sophisticated enough to know that a subject with large amounts of green
>(foliage) and blue (sky) is a landscape? Especially if there is no moving
>subject? I've heard the D700 can be set to AF on a moving subject of a
>specified colour. If that is correct, why can the programming not make
>assumptions about what type of scene is present based on colour recognition?

I'll experiment more with the camera!

[snip]
>My XSi has A-dep, but I've always used this type of auto DOF system for less
>active subjects. Using the action mode on my XSi would probably yield a
>better bird pic than this mode.
>
>Over the years, I've developed a few thumb rules that have worked well for
>me. One of those rules is to choose an auto shutter speed mode for fast
>moving subjects and an auto aperture mode for low-light or more still
>subjects. When shooting fast moving subjects, I know I won't be happy with
>a blurred shot (in most cases), so I set the speed to 1/250 - 1/500 or
>better, and I work with whatever aperture it gives me. The resulting
>aperture is often small enough to give me a nice DOF that is forgiving when
>the subject moves around. If I were to choose an arbitrary aperture, I'd
>probably make my job more difficult because the DOF might be excessively
>shallow, and the extra shutter speed much quicker than is actually needed to
>stop the action.
>
>With still subjects, I'm more interested in playing with DOF, so I like to
>pick the aperture there, and the shutter speed isn't critical since I can
>drag out the tripod, if necessary.
[snip]

Interesting stuff. Thanks.

>Take Care,
>Dudley

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