Quote:
Originally Posted by Killjoy
Thanks for the tip. Even at F22 I was unable to get enough DOF.
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When I had to make some pictures of Teddy's Adventures for my daughter,
these calculators here helped me a lot, specially the DOF calculator and the one for Dimensional Field of View.
Assuming the animal is 25 cm high and we'd like to have it take about 1/3 of the height of the picture, the whole picture should be no more than 75cm.
On a 1.6 crop camera at 20mm focal length this would mean the pet needs to be no more than 1m from the camera.
Checking with the DOF calculator, at 20mm and f/16 if you focus at 1.5m, the DOF should start around 70cm and go to infinity, so the whole thing would work.
With a 50mm on the same 1.6 crop camera, the toy needs to be closer than 2.5m, with f/16 focussing at 3.5m you'd have only a DOF from 2.4 to 6m, with the hyperfocal distance being over 8m. You would need f/32 (focussing at 4.5m) with that lens to get the right proportions. f/22 would give you only a DOF to 17m or so.
To sum all those number up: Wide angle lenses are good for these type of pictures, small sensors with big crop factors too.
Korman