Alan wrote: > > Hello, > > I realize the different camera models have different # of sensors and different > sensitivity (esp with the EOS 3 being able to focus at f8). > > However, once focus is locked do the different models listed have different > accuracy? I'm mostly concern about the case of tele (300 - 500) and macro > (1:2 to 1:1) where focus is more critical do to shallow dof. > Yes, the accuracy is definitely different between models. This has been shown in a test I read some years ago. Everything else being equal, I'd expect an AF sensor that works with smaller apertures to be less accurate. E.g. the 1Ns central sensor (or more accurate its vertical part) works with f/2.8 or better lenses only and gives an increased accuracy with those fast lenses. Of course, as technology advances, it should be possible to gain accuracy by other means, maybe by increased resolution of the sensor (more, smaller pixels). Thomas Bantel * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
