Sigma 17-70 OS or Canon 17-85 IS lens?

Started Oct 30, 2011 | Discussions thread
OP BobT Forum Pro • Posts: 13,205
Re: not easy, but if this helps...


In samples that I've seen of both of these lenses, they both appear to produce images that are just fine to my eye. What am I missing?

I am a little concerned about a somewhat common mechanical flaw inherent in the Canon lens. A zooming malfunction around the wide end of the zoom range. I'm also aware of the the IQ reported to be a smidge better in the earlier non-OS version of the Sigma. So neither is without their respective alleged flaws.

The Tammy 17-50 is just not long enough for me. Both lenses in question fit my desired zoom length and their prices are right. The 15-85 is just to pricy for me.

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