Re: truth in focal length specs (was: Re: f:22, K18/3.5 warmth, 20mm bee's nest...)

2002-04-29 Thread Fred
> I'd agree that the error is no big deal, if tolerance really meant "plus or > minus." It doesn't. When was the last time you read a test report that > found that a lens gave you more of what you thought you paid for? A 20 mm > that measured at 19.4 mm? A 200 mm that gave you 205 mm? An f/2 t

truth in focal length specs (was: Re: f:22, K18/3.5 warmth, 20mm bee's nest...)

2002-04-29 Thread Paul F. Stregevsky
I'd agree that the error is no big deal, if tolerance really meant "plus or minus." It doesn't. When was the last time you read a test report that found that a lens gave you more of what you thought you paid for? A 20 mm that measured at 19.4 mm? A 200 mm that gave you 205 mm? An f/2 that was