Canon 17-85 IS vs Sigma 18-50 F2.8 plus 55-200

Started Oct 29, 2004 | Discussions thread
JackRiley Senior Member • Posts: 1,136
Re: Go for the Sigma 18-50/2.8

hqm wrote:

The Sigma 18-50 is great, and the 2.8 gets you essentially the same
performance at the 17-85 for low light, plus you get that nice
shallow DOF when you want it.

Can't argue with the DOF issue, but f2.8 does not get you the same low light performance. I get three extra stops using the IS, so a f4-f5.6 lens acts like a f1.4-f2 lens as far as low light goes.

I think the 18-50 is a superior lens from what I have seen.

The Image stabilizer is a nice feature for very slow shots, but
f2.8 is pretty helpful in its own way.

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