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Re: [tech-3d] f/stop calculation

  • From: "Dennis M. Hanser" <dmhanser@xxxxxxxxxxx>
  • Subject: Re: [tech-3d] f/stop calculation
  • Date: Wed, 19 Apr 2000 16:40:00 -0400


Brian Reynolds wrote:



> aperture = focal_length / focal_ratio

> If the lens has a 100mm focal length then the aperatures are as
> follows:
>
> focal_ratio aperture
> ----------- --------
> 11          9.0909
> 16          6.2500
> 32          3.1250
> 64          1.5625

That's simple enuff

Thanks!

Dennis M. Hanser


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