Sigma 18-50 f2.8 front focus

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Archive 2007 · Sigma 18-50 f2.8 front focus

snooked123
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p.1 #1 · Sigma 18-50 f2.8 front focus

I have a sigma 18-50 f2.8 with a canon mount. I have just realized that the lens is missing focus a bit and it seems that it is front focusing. What test can I do to check if it is actually front focusing? secondly the lens is out of warranty how much does it cost to have this issue corrected by sigma?

Thanks,
Wajahat

May 25, 2007 at 05:03 AM

cyberstudio
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p.1 #2 · Sigma 18-50 f2.8 front focus

I use this chart, and highly recommend it.

http://regex.info/blog/photo-tech/focus-chart/

May 25, 2007 at 06:40 AM


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