Archived posting to the Leica Users Group, 2011/11/02
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]And an f1 lens is 0.9709 stops faster than a 1.4. Rounded off to an even stop when you select the other options. And 1.696 stops faster than a 1.8. That's faster! And I thought an f 1.8 was fast! I used to think an f2 was fast. Because my first camera had a 50mm f 2.8 Scopar on it. I still think of 2.8 as "normal". -- Mark R. http://gallery.leica-users.org/v/lugalrabs/ > From: Mark William Rabiner <mark at rabinergroup.com> > Reply-To: Leica Users Group <lug at leica-users.org> > Date: Wed, 02 Nov 2011 23:47:57 -0400 > To: Leica Users Group <lug at leica-users.org> > Subject: Re: [Leica] 1.8 vs. 1.4!?!? > > 2/3's as a decimal is 0.6666. > 0.7251 - 0.6666 = 0.0585 > Cant figure out what fraction that would be. > > Bottom line a 1.4 is for sure faster than a 1.8 not by an incremental > amount > like I thought. > > > > > -- > Mark R. > > >> From: Quan Tran <quantran101 at gmail.com> >> Reply-To: Leica Users Group <lug at leica-users.org> >> Date: Wed, 2 Nov 2011 19:36:00 -0700 >> To: Leica Users Group <lug at leica-users.org> >> Subject: Re: [Leica] 1.8 vs. 1.4!?!? >> >> I found this: http://imaginatorium.org/stuff/stops.htm >> >> When I select "precised", it show 0.7251 stops >> When I select "third", it gave me 2/3 stops. >> >> -Quan. >> >> On Wed, Nov 2, 2011 at 3:32 PM, Mark Rabiner <mark at rabinergroup.com> >> wrote: >> >>> I looked up f 1.8 vs. 1.4 thinking it was between a half and a quarter >>> of a >>> stop and they are saying its 2/3rds!?!?! Anybody know that that's true? >>> >>> Where is there a photo calculator that tells you these things?!?!? >>> >>> -- >>> Mark R. >>> http://gallery.leica-users.org/v/lugalrabs/ >>> >>> >>> >>> _______________________________________________ >>> Leica Users Group. >>> See http://leica-users.org/mailman/listinfo/lug for more information >>> >> >> >> >> -- >> Quan Tran. >> blog: http://fluxlux.blogspot.com/ >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information