Vesa Perala wrote:
>
> > My 20-40mm Tamron is superb. Case in point, it is well known that the
> > 24mm Sigma F2.8 is far sharper than the equivalent Canon 24mm F2.8 lens.
> > Again, not optimistic, just truthful. ;-)
>
> "far sharper"? Really?
> Sharpness alone doesn't make any lens good but I quess we knew that
> already.
>
> I find my EF24/2.8 very good and even if photodo.com gives Sigma
> 2.5% better (3.9 vs. 4.0) rating I wouldn't call any difference
> that small "significant". There must be other tests which I haven't
> seen but I would like to see exact quotation of the test instead of
> a second (or more) generation personal interpretations of it.
>
> In general, aren't we sometimes a bit too much interested in
> nitpicking about small differencies here? Are we experienced enough
> to make this kind of judgements or are we just repeating others who
> possibly don't know any better?
>
> Just mildly agitating the discussion here to get it more interesting...
>
In the case of the 24mm lenses, you would be hard pressed to see a
difference in sharpness. I should know, I own both of them ;-) The
Sigma is nice for it's very close focusing and good DOF scale and
probably equal to the Canon in sharpness. At least *I* cannot see
a sharpness difference. I *can* see more flare in the Sigma and
overall I *think* I can see a difference in contrast in favor of
the Canon lens.
But without comparing frames of the same subject taken at the same
location and time with identical settings, this is hard to say and
more speculation than anything else. In any case, I would not support
the "well known" "fact" that the Sigma is "far sharper" than the
Canon. It *may* be sharper. But *if* it is indeed sharper, the difference
is definitely not noticeable for me in real pictures. So I'd conclude
the difference is at least not obvious.
In daily use I prefer the Canon. It works better with my EOS 5, the
Sigma has a compatibility problem. Nothing serious, it'll work. But it
makes a rattling noise every time I press the shutter release button
halfway (even with the camera off) or turn the camera on. It works
absolutely normal with the 1N and 100, though.
Thomas Bantel
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