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Photography > Photographic Techniques General Discussion > Re: Calculation...
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Re: Calculation of best focus point

by "BrJohan" <brjohan@[EMAIL PROTECTED] > May 26, 2007 at 04:48 PM

"Michael Quintero" <michael.quintero@[EMAIL PROTECTED]
> skrev i meddelandet 
news:1180182693.122864.306850@[EMAIL PROTECTED]
>
> Hi,
>
> my question regards the calculation of the best focus point for a
> situation in wich dof should extend from some near limit different
> from the hyperfocal point to infinity. I know about the formula 2*X*Y/X
> +Y (where X is the near limit of dof and Y is the far limit) to give
> the best focus point but what value do I have to set for Y if it
> should be infinity? - 0 or some negative value?
>
> Any input very welcome!
> Michael
>

The value of the expression for 'best focus point' approaches 2*X when Y 
approaches infinity.

/BJ
 




 2 Posts in Topic:
Calculation of best focus point
Michael Quintero <mich  2007-05-26 05:31:33 
Re: Calculation of best focus point
"BrJohan" <b  2007-05-26 16:48:04 

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