> "Jaakko Pitkäjärvi" <[EMAIL PROTECTED]> wrote:
> How is this feature in 1V and EOS 30? I leafed through 1V "technical
> overview" but couldn't get confirmation for this detail. And EOS 30
> is pretty unfamiliar for me. I am specially interested, because I
> would like to use my 28-135 and change the body within couple of
> months to a model that can make fast series of shoots with that. I
> photo mainly fast and moving object (boats), so this detail is
> important for me. EOS 3 has been in my mind, but should I now go
> over or under it?
Hi Jaakko,
The information "High Precision" and "Normal Precision" focussing
limitation on the EOS 3 is in Bob Atkin's EOS FAQ:
http://bobatkins.photo.net/info/faq30/eos3af.html
For the EOS 1v, consult:
http://www.canon.com/eos/af_tech.html
In summary, on the EOS 1v, for lens effective-aperture:
f/8 or faster: central horizontal-only
f/5.6 or faster: all sensors horizontal-only
f/4 or faster: central H&V sensor, remaining 44 sensors H-only
f/2.8 or faster: 7 H&V sensors, remaining 38 sensors H-only
I cannot find official Canon specification about the Elan 7E AF:
http://www.elan7.com/
http://www.canon.com/camera-museum/tech/report/200010/200010.html
It would seem that all Elan 7 sensors are operational down to f/5.6
even the cross-type central sensor. (At least on my camera).
So, if you want to get Cross-type AF on lenses such as the
EF 28-135mm f/3.5-5.6 IS USM and the EF 100-400mm f/4.5-5.6L IS USM
you need to look at the Elan 7=EOS 30=EOS 7 Or perhaps the EOS 5
if you can put if with IS conking out with CF-4.
Cheers
Julian Loke
P.S. Perhaps another chapter for http://www.eosdoc.com/
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