Archived posting to the Leica Users Group, 2001/07/16
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Dans un courrier daté du 16/07/01 21:14:11 Paris, Madrid (heure d'été), barney@ncep.noaa.gov a écrit : > Guys... > > Whole Stops: > > 1, 1.4, 2. 2.8, 4, 5.6, 8, 16, 32, 64, 128 > > All you need to remember is 1 and 1.4. You can rebuild the entire sequence > by > multiplying every other number by 2. The next f-stop is always the one > before > last in the list times 2. If this is too much like the college boards write > the > list down on a piece of paper, put it in your wallet, and go have a single > malt. > :-) NB This isn't how the math works, it's just a way of being able to > built an > f stop table without memorizing it. > > 1 > 1.4 > > 2=1x2 > 2.8=1.4x2 > > 4=2x2 > 5.6=2.8x2 > > 8=2x4 > 11=5.6x2 > > 16=2x8 > 22=2x11 > > Barney > Hey Barney , after the single malt , you forgot f 11 and f 22 ! One single malt at a time , just one :) JO GOODTIMES -FRANCE/ AIRBORNE RADAR TECH / LIVE FREE OR DIE will soon be moving to Metz