Re: OT?: How to calculate depth of field?

[Ben Kreunen <ben@xxxxxxxxxxxxxxxxxxxxxxx>]

>>Sorry for this off topic question but, just wondering if anyone knows
>>how to calculate the depth of field for a particular focal length and
>>f-stop?  I've found a lot of 'rules-of-thumb' for calculating depth-of-field
>>from infinity, but I wanted to figure out what would be in focus if I
>>focused at a particular distance.

I'm pretty sure there's a formula for it, I'm trying to track it down... 
although it's not as simple as you might be expecting... it depends on what 
you call "out of focus"

Cheers

Ben

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