Date: Mon, 08 Apr 2002 07:58:27 From: "neil barnes" <[EMAIL PROTECTED]> Subject: RE: Digital cameras (was [LIB] New Website
>Date: Mon, 08 Apr 2002 06:52:28 +0000 >From: "Matthew Hanson" <[EMAIL PROTECTED]> >Subject: RE: Digital cameras (was [LIB] New Website > >And I wonder if it is >from this measure of high exposure speed at the very low f/stops that these >lenses are capable of, that gave birth tow the term 'fast lens'. The f-number system was designed to give a common reference point for evaluating lenses. One f-stop changes the light by a factor of 2 - which is why modern cameras have shutter speeds that also change by a factor of two. Yes. The phrase dates from the 1860s or so. The difference in exposure between an f8 and an f11 might be five minutes with your head in a metal frame to keep you from moving. [desperately searches for libretto link] Ah yes. It turns out that the 50/70 screen is exactly the right size to use as a lightbox for 4*5" negatives. [phew - couldn't find a miniskirt!] Neil _________________________________________________________________ MSN Photos is the easiest way to share and print your photos: http://photos.msn.com/support/worldwide.aspx ************************************************************** http://libretto.basiclink.com - Libretto mailing list http://www.silverace.com/libretto/ - Archives -------TO UNSUBSCRIBE------- Reply to any of the list messages. The reply mail should be addressed to: [EMAIL PROTECTED] - Then replace any text on the message's subject line: cmd:unsubscribe --------TO UNSUBSCRIBE DIGEST------ Do above but with this on subject line: cmd:unsubscribe digest **************************************************************
