Pinhole constants (was: Duh - emailing individuals on list)

2008/2/21, Murray Leshner <murrayatuptowngallery@yahoo.com>:
>
> Sorry all
> _______________________________________________

Not at all, Murray!

Perhaps your question was specifically addressed to me but it has a broad
interest for the list:

Murray asked:
>> 1) Have you ever given any thought to what 'pinhole constants' result
>>from the sizes of apertures use effectively for cameras obscuras?
>>I don't know enough about the dimensions people use. I think that would be
interesting rule-of-thumb to keep.
>>I'm still working on a pinhole calculator that's 'different',
>>using graphical interfaces (sliders) for 'what if' scenarios,
>>allowing user adjustment of parameters with results changing in a table.

I don't know of any such easy rule-of-thumb but I'd like to hear if others
have any ideas on the subject.
With the several pinhole calculators available on the web, it should be
relatively easy to check the concept.
Of course, when it comes to exposure, I keep using the famous "Sunny-16"
rule-of-thumb.

Best to all,

Guy

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--
Que la douceur de l'amitié soit faite de rires et de plaisirs partagés.
Khalil Gibran
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