Just picked up a Sigma 35mm 1.4 for my 5Dc. What are your testing recommendations ?
After you check for accuracy of focus, you could shoot some test charts at various f/numbers and check the resolution at the centre and edges.
I printed A4 size and set up a board with 5 charts; see my gallery.
Multiply best resolved number x300 to get LPPH. Compare with data from the following site.
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|Feb 9, 2014|
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|Feb 21, 2014||1|
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