Archived posting to the Leica Users Group, 2001/07/16
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Kyle, That's simply wrong. The f stops go by powers of the square root of two: 1, sqrt(2) (= approx 1.4), 2, 2 sqrt(2) (= approx 2.8), 4, and so on. So f1.0 is exactly one stop faster than f1.4. Mark Davison - ----- Original Message ----- From: "Kyle Cassidy" <cassidy@netaxs.com> To: <leica-users@mejac.palo-alto.ca.us> Sent: Monday, July 16, 2001 9:21 AM Subject: [Leica] re: should i buy a noctilux > >Currently, I own a 50mm Summilux and sometimes I think I want one > >more stop. > > fwiw, f 1.0 is NOT one stop faster than f 1.4, it's only a third of a stop > faster. so unless you're looking at your images and shaking your head > saying "damit! it's a third of a stop underexposed!" you're okay with your > summilux... > >