Interspersed.
Cotty wrote:
On 19/1/06, Adam Maas, discombobulated, unleashed:
Here's some on Canon's L glass:
http://www.dpreview.com/reviews/canoneos5d/page22.asp
That shows definite vignetting/fall off on the 5D that doesn't exist on
the 20d (As the problem areas are off the sensor).
You ever shoot any film?
Did you even read my post? The second link was film and shot by me.
Acros 100 to be exact. I've got a dozen rolls through that camera in the
week I've had it. Yeah, I pixel-peep a little, but I shoot a hell of a
lot more than I pixel-peep. Personally, I don't care about vignetting (I
can fix it in PS if I have to), that doesn't mean it should be ignored
as some people will care. I do care about edge performance and anything
that makes it worse is an issue for me (Although I care about other
things more, I'd be shooting a 5D if it was in the budget, even with the
edge performance issues).
You remind me of a friend I have. He's constantly on the phone to me
comparing results from cameras. He calls me with two images on his PC
display, side by side, each blown up to 8000% (btw that's a joke) and
he's telling me that camera Y is marginally better than camera X because
of [unknown argument deleted]. He tells me all the scientific technical
stuff, and I'm like fitting the noose around my neck getting ready, and
he ends up by asking me in desperation which one he should get. I don't
know how many times he's swapped and changed gear. If he ever made it to
a photographic gallery they'd be wiping nose-marks off the prints, bless him.
So I post a couple shots that show definite, but not show-stopping,
performance issues with full-frame (Film and Digital) that don't exist
with 35mm lenses on 1.6x crop camera, to answer your question about
whether or not I had any data on the issue, and you wander off into
irrelevant stories. Hell, it wasn't even the reason I dumped my D (That
came down to wanting to be able to share gear with the other people in
my camera club, who are mostly Canon shooters).
Adam, I don't think we're in the same wormhole mate. Good luck with your
edge performance ;-)
I like my prints to look as sharp at the edge as at the middle, I don't
like distortion most of the time. And it's more visible on FF digital
than on film. So sue me.
Another example, this one on a EOS 3, with the EF 28-105 f3.5-4.5 USM II
wide open at 28mm on Acros 100:
http://www.flickr.com/photo_zoom.gne?id=85917538&size=l
It's asking me to join FuckR and there is more chance of me dining with Elvis.
You don't need to join to see that shot. Just look at the damned shot
instead of whinging about my choice of photo hosts.
Here's the direct link to the JPEG.
http://static.flickr.com/40/85917538_35f5c4770f_b.jpg
This shows off distortion that would be out of the frame on a 1.6 crop
camera and possibly on a 1.3 crop camera. This is my own shot btw. The
full resolution scan shows mild CA and distinct softening at the edges,
but it's not particularly visible on this shot because of camera shake.
On a 5D, which is more sensitive to edge performance than film is (For
the reasons Rob noted in his response to me) I'd expect this zoom's
weaknesses to be more apparent. Don't get me wrong, considering the
cost, the 28-105's a great lens (I'd consider it at twice the price) but
I'd hesitate to use it on a 5D unless it was stopped down and not at the
wide end of the zoom. The 28-105 is pretty comparable performance-wise
to the 28-135, it just lacks IS and the extra length on the tele end.
I don't use such lenses and have no intention to.
Then my point is irrelevant to you anyways (Which was that consumer
zooms like the 28-105 perform poorly on full frame digital). So why did
you respond in the first place? Just feeling bitchy? You don't even
shoot a full-frame camera. In fact, since you're so against
pixel-peeping, why don't you shoot with such lenses? Not much of a
performance difference between them and pro glass like your 85/1.4 A*,
just a little edge sharpness and maybe distortion ;-)
Cheers,
Cotty
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