On 7/7/2015 5:58 PM, David J Brooks wrote:
As you may remember my sigma 17-70 broke and Gentec in Markham
repaired it in the spring. It works fine, its seems to me to be just a
tad softer than what i remember. I did a quick down and dirty focus
check his morn, and it seems to be slightly FFing. Now being a zoom,
if it is FFing, at what position would it be ideal to do the
adjustment, at 1/2 way or at 70.

Dave


Where do you use it the most? That's where I'd do the adjustment.

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Science - Questions we may never find answers for.
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