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A decentered Sigma 28mm f1.4. Would you request a repair?

Started 4 months ago | Discussions thread
lighthunter80
lighthunter80 Contributing Member • Posts: 990
Re: A decentered Sigma 28mm f1.4. Would you request a repair?
  1. Was this manual focus or via live view?
  2. Did you focus on the test chart center or on the corners?
  3. Are these crops from one single image or two separate images?

Testing at f1.4 for corner sharpness is tricky. If you use live view and focus on each corner individually and then compare the images you may get consistent sharpness.

I think your results here don't necessarily conclude that your lens is faulty. Besides, the difference is very minor overall.

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Canon EOS R Canon EF 70-200mm F2.8L IS II USM Sigma 35mm F1.4 DG HSM Art Sigma 50mm F1.4 DG HSM | A Canon EF 16-35mm F4L IS USM
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