Thanks Andrew, I didn't work that one out but on another page on that
site there was one more simple way to get the required sizes.
/ Johan
10 aug 2005 kl. 17.40 skrev Andrew Dacey:
>
> I found this calculator online, gives you some working points for the
> size pinhole you'll need for the given focal length and it will show
> you what coverage and FOV you'll get. Not the most intuitive interface
> though.
>
> http://www.mrpinhole.com/calcpinh.php
>
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