On Thursday, February 27, 2003, at 10:28 AM, Robert Meier wrote:
I guess
there are 'regular precision' cross sensors, too. This makes me wonder why
the high-precision cross sensors do not convert to a 'regualar' precision
cross sensor with slow lenses? Are there techniqual issues with that? Or did
I miss something?
Yeah, all non-pro EOS cameras with cross sensors have what you could consider regular precision cross sensors. Ever since the EOS 10/10s, I think, which was the first EOS camera to have multiple focus points. The non-pro cameras with multiple focus points have cross sensors in the middle and linear sensors everywhere else, which is why low-light AF works better if you select the centre point manually.
As for why the high-precision sensors don't revert to regular cross sensor mode with slow lenses, that's a good question. I presume there's some technical reason for this, as it would make sense. I've never seen an explanation for this from Canon.
- NK Guy
--
PhotoNotes.org - a free information resource for the Internet
photographic community, created and maintained by tela design.
http://photonotes.org/ * http://teladesign.com/* **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
