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next PZ lens test report: Sigma 50mm f/1.4 DG HSM | A on APS-C
#36
That's true, but "pre GV" sigma was much much worse than that (a 10-20 varied 28% (!!!) across the five copies my uni has for the school paper).  Of course those have seen use, but the variation among them is ridiculous.

 

I feel that the 35L's age works for and against it.  Its construction tech/engineering is 'outdated' which works against it for holding elements in alignment, but its age works for it in that workers have built a gazillion of them, if the 35A is done on canon's human lines.  In ~2011 they moved 70% of their MFG back to Japan in a new robotic factory due to changes in yen value.  I know they have that plant, but nothing about what it does.

 

One of the big goals of the 16-35/4L IS was improving repeatability/equalness across produced copies.  Hopefully it was met.  It's a lens I'm keenly interested in, and of all the full-res images I've found from various copies (maybe a dozen) only one was a dud, though the the decentering was pretty bad.  Left side was pretty godawful.  I'm sure I can find a link to that specific sample, if you want.

  


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next PZ lens test report: Sigma 50mm f/1.4 DG HSM | A on APS-C - by Scythels - 07-01-2014, 01:18 AM

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