Depth of field calc for Win Mobile
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davekone
Registered: Apr 28, 2003
Total Posts: 4454
Country: United States

Does anyone know if a good depth of field calculator that will run on Windows Mobile 6 or Excel that take into account your cameras crop factor? I can find tons of apps and Excel files but seem to come up empty trying to locate an app that considers crop factor in the calculations.

thanks



Mark Sisco
Registered: Oct 16, 2002
Total Posts: 2456
Country: United States

I use this one:

http://home.comcast.net/~jonsachs/

The Help File tells you how to set the "resolution" setting to match your camera's sensor size/resolution, which I understand to account for crop factor.



sjms
Registered: Mar 21, 2003
Total Posts: 7262
Country: United States

http://www.photo-software.com/camera-pocketpc.htm

i have been using it for about a year now. dead on accurate.



davekone
Registered: Apr 28, 2003
Total Posts: 4454
Country: United States

Thanks everyone!



tomb18
Registered: Oct 28, 2004
Total Posts: 808
Country: Canada

Any for a Blackberry?



gfiksel
Registered: Jan 15, 2003
Total Posts: 2544
Country: United States

For not too a large distance you can use any FF calculator for a given focal length, f-number, and distance and then divide, yes, divide, the result by the crop factor. Usually it's a pretty good approximation in a pinch. You might use the http://www.dofmaster.com/dofjs.html to play.
An example - you have a 85 mm lens at f/5.6 and the object at 20 feet.
The DOF for a FF camera is 5.76 feet
The DOF for 40D (x1.6 camera) is 3.61 feet.
The ratio is 1.6



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