> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of > [EMAIL PROTECTED] > Sent: Friday, July 25, 2003 4:34 AM > To: [EMAIL PROTECTED] > Subject: EOS Super fast AF with 2,8 L Lenses > > > Hi, > > It seems to some pro (film) bodies (like Eos 1 & 3) have super fast AF on > the middle focus point if the lens is 2,8 or below. Is this true? > > How is this with digital bodies. Is this only on the 1D(s)? > > Does this justify investing in L Lenses 2,8 or below? In other words how > big in % is the AF speeds with an Eos 1 and a 2,8 or an 5,6 lens. > > Thanks all > Leeuwtje > >
Hi Leeuwtje, This depends on the EOS body in question. I've owned and used many of the Canon film (Elan IIE, EOS 5QD, EOS 1N, EOS 1N/RS EOS 1V/HS), and digital bodies (EOS D60, EOS 1D, EOS 1Ds, EOS 10D), and ALL of the "pro" class bodies work much better with f/2.8 or faster lenses. Some EOS body cross type sensor(s) are only active with and f/2.8 or faster lenses. It's these bodies that are the ones that show much faster more reliable AF when used with f/2.8 or faster lenses under all lighting conditions. The difference is very noticeable especially when shooting sports or action images and also under low light. The difference grows more noticeable with longer focal length lenses. That's why you see so many of the big Canon "L" teles at sporting events very fast AF speed, AF reliability and of course image quality. Cheers/Chip * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
