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Re: [OM] OM4Ti real EV values!!!

Subject: Re: [OM] OM4Ti real EV values!!!
From: David Irisarri Vila <valicors@xxxxxxxxxx>
Date: Fri, 28 Apr 2000 08:47:59 +0200
You were right Wayne! Thanks
But values are OK? Olympus with 50/1,2 put -6.5-->19 
into the catalog, why?

Dave

Wayne Shumaker wrote:
> 
> correction in your formula, missing log
> 
> EV = 3.322*LOG(f²/t)   (log base 10)
> 
> or
> 
> EV = ln(f²/t)/ln(2) = 1.443*ln(f²/t)  (natural log)
> 
> derived from 2^^(EV) =  f²/t
> (read 2 to the power of EV equals f-stop squared / time)
> 
> Wayne
> 
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