I’m pretty sure that if you asked industry experts what they thought the L-mount Alliance meant to Sigma when it was first announced, they would have stopped at “lens development.” That made sense: it’s what Sigma touted on-stage when Panasonic, Leica and Sigma all announced this partnership.

Clearly, this L-Mount Alliance is a lot more deeply woven together among the three companies than previously thought.
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https://www.imaging-resource.com/articles/a-deeper-dive-on-the-sigma-fp-what-to-expect-and-where-does-it-fit