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Old October 12th 04, 11:45 PM
Ryadia
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Old-CAT wrote:
Look here my first test shots with my new Sigma optics !

This Sigma lens is their first optic with optical stabilizer !

AND YES optical stabization works great. hmmm No it works extremelly great
and SUPER GLASS optics.

It blows away my Canon 70-200 f4L !

All shots is shot handhold, and most of them in wind 7-10 m / Sec.

Judge for your selves

YES all great ! but i admit focus is slow compared to USM / HSM


http://www.olsen-web.dk/photo/firstsig/index.html


Claus Olsen


Not trying to blow out your candle Claus ...but.
None of your shots are totally definitive of the lens's ability (or lack
of it)to resolve detail. I myself bought a 100~300 f4 Sigma 'APO'lens
and have some extremely nice photos from it but the thing it doesn't do
(neither does yours) is provide detailed images in areas of light and
shade that the Canon 'L' series lenses can.

I was fortunate enough to be able to compare a Canon 70~200 f2.8 with my
new Sigma. Same subject, same camera, same time. The Sigma and the Canon
(with a 1.4 extender) both failed to resolve the detail of the 70~200 by
itself. This is something of an interesting situation. If the lighting
is overcast or cloudy the contrast range should be closer to what the
lens can work with and it should resolve (nearly) as well as a Canon.
Oddly this is the worst scenario to have.

When the situation is one of white and deep black with the correct
contrast range inside those 2 extremes, the Sigma and the extended Canon
could not capture detail in either the black or the white areas. Take
off the extender and the detail is resolved. Unfortunately you can't
'take off' anything from the Sigma because that's all it's got!

Otherwise, sharpness is good. Sadly the best from Sigma is only about as
good a consumer lens from Canon or Nikon. For me I simply couldn't
afford anything else so now I work knowing some of the shots I could
have gotten are lost. Hopefully, you will have better results in Europe
than the sun drenched Australia I live in.

Ryadia