At 02:51 AM 3/27/2005, James asked:
>Or am I going to have to have to take some chalk, draw a huge 30 meter
>ruler on the street outside and work out my own scale?
>
>James
Likely yes . . . and you must also consider:
(a) how much you will enlarge the images
(b) the distance at which you will view them
Apparent depth of field is dependent on both of the above . . . along with
focal length, critical focus distance and lens aperture. Depth of field is
a phenomenon of human vision and its acuity limits.
-- John
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