<<SNIPPED>> > > I don't use ECF on the 3, but I have tried it a few times and the camera > certainly achieves focus more quickly when using just the center > sensor than > with ECF engaged. AF speed with the 3 is also increased slightly > when using the > PB-E2 with the NiMH battery pack--focus speed is a function of > the interaction > between the body and lens and will vary depending on the combination. > > > I was using CART (open wheel race cars similar to F1 cars but > heavier with > > much more power), > > This is interesting. F1 cars are generating 850 hp and running at > 18,500 rpm; > what are they getting in CART? > > fcc > >
Hi FCC, So in your opinion the EOS 3's ECF slows down the AF speed and is faster with the ECF off? This is what I had expected but I didn't notice much if any difference in release time with ECF off like I did with the EOS 5QD bodies. Now that you mention it, you're right about power sources making a difference in camera performance in general and AF in particular. I have on occasion borrowed a friend's NiCad packs for my EOS 1ns and boosters once in a while and I recalled that on a freshly charged NiCad pack the cameras feel faster overall than with a fresh set of Alkaline. I just bought a nice used EOS 1 with a power booster E1 and a pair of NiCad packs and charger through eBay. I wanted the charger and NiCad battery packs and will most likely sell off the EOS 1 and booster unless my nephew wants to buy them. Anyway I'll see if this makes the difference in performance that I recall when using the borrowed NiCad packs. As to the output of the CART engines it depends on which engine and who you ask but the Honda engines are rumored to put out almost 1,000 HP at speed and are turning over 15,000 RPM. A CART engine has a smaller displacement 2.65L vs. F1's 3.0L but is turbo charged with a maximum allowed boost of 37 inches of mercury or about 2.5bars pressure. The top CART cars can top out at almost 250mph on the big ovals. F1 cars are 300lbs. lighter, this is a huge difference, they are more extreme in engineering but are much less flexible cars in terms of what they can do well on the track. Well too much talking, gotta go get my daughter from school. Regards, Chip Louie * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
