> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bob > Sent: Monday, February 05, 2007 11:36 AM > To: eos@a1.nl > Subject: Re: EOS protective filters > > Bill Gillooly wrote: > > > Oh, no, you've got me started... > > > > I never could figure out why when Canon went autofocus everything had > > to get so BIG. I had a waist-pack that could hold an AE-1 or F-1 and > > 3 lenses (and some other stuff). It couldn't come close to holding my > > EOS 5 any anything but the smallest lenses (EF 50mm f/1.8 & EF 28mm > > f/2.8). > > Well, starting with the lens, the EF mount had the contacts to contend > with. Then there is the strength of a somewhat larger mount. Moving on > to the body, there is a lot of logic inside the body that does more than > the AE-1 or F-1 ever had to do. All the FD cameras did was expose and > move film. Now they make sure focus is good, expose media, process the > image, buffer images for n frames per second,and so on. The logic takes > up space, even with VLSI, Very Large Scale Integration, the more > features that you get take up some space. Then the logic and the > autofocus lenses take power so the body needs more than a PX625 cell to > provide that power. >
There's also the fact that also inside those AF lenses is a focusing motor, another space hog. tomp * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
