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Re: [OM] Film, heat and refrigeration - semi OT and slightly hijacked

Subject: Re: [OM] Film, heat and refrigeration - semi OT and slightly hijacked
From: Morgan Sparks <msparks@xxxxxxxxxxxx>
Date: Sat, 11 Aug 2001 07:15:47 -0400
Roger wrote:

> Use your lens wide open, but remember the difference with normal
> photography is that it's absolute aperture you want, so a 50mm at > f/2.8
>(aperture = 17.85mm) will capture more stars than a 28mm at f/2 > (aperture =
> 14mm).

Can someone please explain this?

Morgan Sparks

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