Re: [photo-3d] Re: DOF & Rangefinder

["Dr. George A. Themelis" <drt-3d@xxxxxxx>]

Chuck writes:

>If everything in my picture is beyond 15 feet and I am 
>using F16,  I an not going to use the Hyperfocal distance of 8 feet 
>(out of my Realist cap) for the shot.  Using my method I would set 
>focus at 30 feet and Infinity would be sharper and the near object 
>just as sharp.

Chuck, look at your Realist and tell me how you are going
to focus it at 30 feet.  The last marked division before
infinity is 25 feet.  Might as well focus at 15 feet, 25 feet
or infinity.  At f16 you are not going to see any difference,
I guarantee it.

Basically, you prove my point that you don't need to know
the location of the nearest or furthest point with any
accuracy.

I am not advocating blind use of the hyperfocal distance.
I am also not saying that the rangefinder is useless.
But I do say that you are wasting your time if before
every stereo picture you use your Realist's rangefinder
to figure the exact distance of the near and distant
objects, do some mental calculation to determine the 
optimum focusing distance, and then set the aperture 
at f16.

George Themelis