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P3D Re: Depth of field/Depth of focus

  • From: Duncan Waldron <J.Waldron@xxxxxxxxx>
  • Subject: P3D Re: Depth of field/Depth of focus
  • Date: Tue, 27 Jan 1998 09:00:41 +0000 (GMT)
On Mon, 26 Jan 1998, C Fitchett wrote:

> They way I remember it, there is an inverse relationship between
> depth of field and depth of focus.  That is to say, as depth of field
> increases, depth of focus decreases; as depth of field decreases, depth
> of focus increases.  
>              
>                                       Clark

Only if there is no change in aperture. Decreasing aperture will increase
both, and vice versa, but altering the point of focus increases one while
decreasing the other. 

 ......:.....                  ()  .:.

     ...:..           ()           ..:...

       .:.  ()                  .....:.......    


> It's been a long time since I studied this though,
> so my memory is a little fuzzy. ;)  

Tried refocusing...? ;->

Duncan W


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