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Old Sep 2, 2008, 12:28 PM   #1
Senior Member
Join Date: Oct 2004
Posts: 278

Is there any technique to improve the focus on this lens I find once the contrast is lost the focus becomes stubborn, very frustrating. On some days I find the sigma a focus champ. Interesting note it seems to work a little better on my rebel xt rather than my friend's xti. Funny note, I find the focus is much much faster and reliable on my 70-200 L with a 1.4X conv. I would have thought that the extender would slow the focus of the L lens. since it is now f4. Thanks, garman

I would like to add another question, would focus speed and reliability improve if I move up to a 40D body, which is my intention next year.
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