Title: Sigma Quality is not consistent
Product review: I received this glass and played with it for few days. Could never get a sharp image. May be I got a bad piece. Just returned it and did not take the risk of ordering another one. Will probably consider buy it from local store so that I can test it and then buy. You will have to do your won quality checks.
Would you say this review depicts the product in a flattering or unflattering light?
