Date: Sat, 06 Apr 2002 10:00:38 +0800 From: Raymond <[EMAIL PROTECTED]> Subject: RE: Digital cameras (was [LIB] New Website
At 04:50 PM 5/04/2002 -0800, you wrote: >Date: Fri, 5 Apr 2002 16:41:35 -0800 (PST) >From: David Chien <[EMAIL PROTECTED]> >Subject: RE: Digital cameras (was [LIB] New Website > > > > Lots of depth of field with slow lenses, thus no worry or thinking > at all > > >about is that in focus or what f/stop do I use. Can't do it = don't think > > >about it = less to think about in the field. > > > > OK lemme get this right in my head because now I'm starting to get > confused > > ... heh. A slow lens means you need to use either a slower shutter > speed or > > a larger aperture. But doesn't a larger aperture mean LESS focusing depth? > > A lens with a big minimum aperture rating (eg. f/5.6) is a slow lens vs. a >lens with a small minimum aperture rating (eg. f/1.8), a fast lens. OK through all this, something is losing me. When you talk about a 'big minimum aperture', I realize you're talking about a big f-number (ie. in fact a SMALL aperture opening). When you say minimum however does that mean the f-number can get bigger (ie. in fact its a maximum aperture opening) or does that mean the aperture opening can get bigger (ie. in fact its a minimum f-number)? Because in that case it doesn't seem to make sense ... for the same situation, I thought a fast lens lets in more light than a slow lens so you'd expect a fast lens with a small aperture opening (ie. larger f-number) would let in the same amount of light as a slow lens with a large aperture opening (ie. smaller f-number) ... - Raymond --- /~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\ | | "Does fuzzy logic tickle?" | | ___ | "My HDD has no reverse. How do I backup?" | | /__/ +-------------------------------------------| | / \ a y b o t | [EMAIL PROTECTED] | | | HTTP://www.raybot.net | | ICQ: 31756092 | Need help? Visit #Windows98 on DALNet! | \~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~/ ************************************************************** 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 **************************************************************
