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Archived from groups: rec.photo.digital.slr-systems,rec.photo.digital (More info?)
Tomorrow, I'll get two new lenses - A Sigma 24-135mm f/2.8-4.5 and a
Sigma 70-300mm f/4.5-5.6 DL Super Macro. Now, I've heard several
problems with Sigma's quality control and people returning their bad
*copies*. So how do I check the lens for quality issues other than
obvious mechanical/electronic faults? Are problems with sharpness,
contrast, light fall-off etc very evident even to a beginner or should
I run some specific tests?
Thanks,
- Siddhartha
Tomorrow, I'll get two new lenses - A Sigma 24-135mm f/2.8-4.5 and a
Sigma 70-300mm f/4.5-5.6 DL Super Macro. Now, I've heard several
problems with Sigma's quality control and people returning their bad
*copies*. So how do I check the lens for quality issues other than
obvious mechanical/electronic faults? Are problems with sharpness,
contrast, light fall-off etc very evident even to a beginner or should
I run some specific tests?
Thanks,
- Siddhartha