Archived posting to the Leica Users Group, 2000/03/09
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Rick Garrelfs wrote >Hi Richard, >in fact, I think we agree completely. The only difference is: >You have interpreted the "1.4" designation as "exactely 1 f-stop less than >exactely 1". >In other words: 1.4 is really 1.41421..... etc. >I have interpreted 1.4 as just that: 1.4, meaning it may well be less than >exactely 1 f-stop. >We know the 1.5 only with one digit accuracy too, so when doing the >calculation I only take 1 decimal significance, and then you also come to >0,2 f-stop difference >(instead of 0,199, or 0,169 for that matter). >But I think perhaps the most useful answer would be: the guy who posted the >Dilbert scene was probably right :) You're absolutely right!! (b.t.w f5.6 = 2^2.5 = 5.65685 which is more close to 5.7 than 5.6! It does not mean anything at all, but I just noticed it.) Richard Savenije, Professor in Belgium beer and Student in Leicalogy (ok B.D. ? ;))