Cotty wrote:
On 2/9/05, James B.Davis, discombobulated, unleashed:
I haven't checked into using other makers' lenses on EOS cameras but
generally I thought infinity focus was lost. Perhaps there is a place
then for the odd other maker lens. I could use a Pentax 15mm like that
too. Is that a Pentax screw mount lens? Oh, the model indicates a K
mount which is likely not the old screw mount I'm thinking of...
The 15mm is also found in a screwmount, yes - but very rare and will
fetch upwards of 5 or 600 bucks US.
I mentioned cost, but actually the 85 mil isn't cheap - I paid nearly
$700 for mine and it's not mint! Just like the old style sometimes - it
helps me on my inevitable path to becoming an old fart.
The Canon L lenses are brilliant, and for AF, I couldn't imagine using
anything else other than USM - the focussing on my zooms is so quick, any
non-Canon user is blown away by the performance :-) Along with IS, this
was why I switched to Canon a few years ago when I decided to go all-
digital. The choice was a good one.
Cheers,
Cotty
Cotty,
The one area where I see criticism of Canon's lenses is when wide-angles are
used on a full-frame sensor.
The argument seems to be that because the light rays are spread so much,
because of the retro-focus design, the lens is not optimised for digital
although it is fine for film. This tends to make the image soft in the
corners.
Hope that I got that bit right :-)
Didn't someone once post a URL for a site that did lens tests on digital
equipment.
As I am still shooting film, I have no personal experience of this.
It may, of course, be that all manufacturers will have this problem, when
they produce full-frame DSLRs.
Cheers
Keith
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