Originally posted by disco_owner I'm definitely considering it ,seeing all QC issues I read about with regards to sigma . I personally never had any quality problems with sigma lenses .
Where did you read about Sigma QC issues?
Like you I have never had any issues with my Sigma lenses. And when I read about lens QC issues they are Pentax-related as in bad 55/1.4 copies (DPreview tried three and none was good, forum member robgo tried five and none was good), SDM failures, 16-50 decentering issues, etc.
Surely Sigma produces some copies that should be returned but where is evidence that this happens any more often than with other manufacturers?
In Germany, Sigma once sold lenses with a six year warranty (not sure whether they still do it). That's quiet a statement of confidence. Compare that to the one year Pentax warranty even for DA* lenses.
P.S.: If you don't want "Sigma" to be automatically equipped with a link, you need to opt out the "Enable Experimental Forum Features" in your forum options panel.