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07-28-2009, 09:46 PM   #16
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QuoteOriginally posted by Duck Dodgers Quote
I just noticed the iphone screenshot. WTH? Focus point in the example is 5ft 26in? Isn't that the same as 7ft 2in? Or 86 inches? What kind of weird, illogical, un-intuitive interface is that?
LOL! I hadn't noticed that. Perhaps some people find it easier to think in terms of 36" rather than 3'. At least that's the only explination I can think of. Thanks for pointing that out!

07-31-2009, 04:49 AM   #17
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I've got a Java app on my Nokia phone (6288, S40v3) that calculates DoF. Works for all cameras, if you know the 'crop factor'. I'll try to check where I got it from, if I forget or you are interested, feel free to remind me via PM.
12-06-2009, 10:12 AM   #18
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About the "Depth of Field Calculator"; this is probably a dumb question but when using the calculator for a 15-55 kit lens, how do I figure out what number to use for the focal lenght?
12-07-2009, 10:09 AM   #19
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15 and 55. Remember on APS-C The focal length is not changed there is only a cropping that happens in the image.

12-07-2009, 12:41 PM   #20
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I appreciate your reply. Thank you.
I have a Pentax SMC-M MACRO 1:4 50mm lens and a 1:2.8 28mm lens I bought on e-Bay in the mail to me. So, there is no problem with determining the focal lenght for those lenses. I also have a Canon S3IS with a 6-72mm 1:2.7-3.5 lens. The camera is listed in the table in the "Depth of Field Calculator." Is 75 the number I should use for that lens? (I hope it's OK to ask a question about a Canon camera in this Pentax forum.)
12-29-2009, 04:33 PM   #21
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There is a downloadable DOF calculator for Win:
Hyperfocal Distance and Depth of Field Calculator - DOFMaster
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