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[OM] Re: ?simple? problem driving me nuts... calculating magnification f

Subject: [OM] Re: ?simple? problem driving me nuts... calculating magnification from focal length and focusing distance
From: Joel Wilcox <jfwilcox@xxxxxxxxx>
Date: Wed, 2 Nov 2005 17:36:58 -0600
On 11/2/05, Chuck Norcutt <chucknorcutt@xxxxxxxxxxx> wrote:
> I guess I should have posted the bits from Shaw about why you don't want
> to bother with the math.  As Walt mentioned: "With lenses like the 90/2
> Zuiko and its ilk, your guess is as good as mine about where to measure
> from."  you need too much data about some modern lenses to be able to
> make the math work for you.
>
> The empirical method works perfectly fine, is totally accurate and a lot
> easier.  However, it will only satisfy the engineers and not the
> scientists.  :-)
>
> Chuck Norcutt

Also satisfies the bonehead poets and musicians on my block.

Joel W.
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