Evrim, It is quite simple, at least for a technician like my ;-),
Say you have a lens 50 f1.4 Looking from low EV to high EV it will first start to decrease the time, upon the point where the combination aperture/time is the lowest EV possible with that combo (in this case EV6 1/30 f1.4), form that point on it will decrease time and aperture simultaniously, upon the minimal aperture of the lens (in this case EV22 1/8000 f22). After that only the time will decrease again. (speeking in general, with this lens the minimum time is reached.) This is also explained on page 65/66 in my EOS5 manual. It uses an EV-time-aperture graphic, which makes it easier to understand. Take in account that the lines for EV-value are under an angle of 135 and only one is drawn in the second graphic (for P-shift). Drikus ----- Original Message ----- From: Icoz, Evrim <[EMAIL PROTECTED]> > This is what I wonder: > > I understand that camera picks the rigth EV based on whatever the algorithm > it has (center weighed, spot, evaluative whatever). But after that, how does > it decide which combination of aperture and shutter speed? > > -e * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
