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Re: [OM] f/0.x lenses

Subject: Re: [OM] f/0.x lenses
From: Hugh Turnbull <hugh_turnbull@xxxxxxxxx>
Date: Thu, 11 May 2000 16:01:18 -0700
Not at all.  The f rating is just the ratio of aperture width to focal
length.

pizzuto wrote:

> I always understood the f number to refer to the ratio of the actual
> scenery light intensity appearing inside a lens.  Ex: f2 would let in
> 1/2 the light intensity.  Ergo, wouldn't f < 1 imply that light
> amplification was taking place.
>

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