On 22/12/2011 01:15, Dario Bonazza wrote:
Jan van Wijk wrote:

Hmm, some room for interpretation here, do you mean this one:

Sigma 70-200 mm f/2.8 II EX APO DG Macro HSM

If so, no I have no experience with that one :-)
However, I do have a slightly older version, which did not have HSM,
and is not optimized for digital.

Same here.

It was one of my favorite lenses on film (MZ-S), together with the matching EX converters.

If so, what say you?

IQ was quite good, and so was build quality.
I tend to use it less now, prefer the DA 50-135 for the shorter end,
and the Bigma (with OS and HSM) for the long end.

Except for the Bigma (which I don't own), I agree with Jan and I'd go a little further. That Sigma is an excellent lens. Some years ago I compared it to the Pentax FA* 2.8/80-200 and it was not so far from it. About resolution and sharpness, the Pentax was a little better at center ad a little softer at edges. All in all, quite a tie. The real pluses of the Pentax were an overall better "brilliance" of the image (color balance and such) and, most visible , a much better control of flare and ghost.

The problem with some Sigma lenses (at least those I had the occasion to own) is you cannot really get accurate AF: Should you tune for say 70mm, you have a visible error at 200, and vice-versa. The same happens (even more critically) with the latest Sigma DC 17-70mm OS, which I sold quickly for that reason. Back to the Sigma 70-200mm AF issue, I then decided to set perfect focus around 150mm, so that I get fine results 100 to 200mm, while forgetting to use that lens around 70-80mm. After all, I own other lenses covering such focal lengths. So now I choose which one to take with me between DA* 50-135mm and the Sigma 70-200mm. Nine out of ten, the Pentax suits me better for the combination of focal length, size and noiseless operation (needed at performances I shot). At outdoor concerts, I take the Sigma with me. I'd love a DA/FA* 2.8/70-200mm! No, the DA* 4/60-250mm is not such a lens, as I miss that extra stop.
Good information - many thanks. I've also looked at the 50-135, but it's more than double the price of the 70-200 down here and, while the 50-135 is a wonderful lens and I'd love one, I don't know if it's 2+ times as good as the Sigma. And I don't think I could stretch my relationship with the finance manager that far... :-)

Regards,

Pete Mac in Melbourne

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