Nikon Z-Mount Restricts Sigma, Raising Industry Concerns
Originally Published 2 months ago — by PetaPixel

Sigma, a leading optics manufacturer, is not available on Nikon Z-mount due to undisclosed reasons, which appears to be a decision by Nikon rather than Sigma. This exclusion is notable as other third-party brands like Viltrox are actively producing affordable, autofocus full-frame lenses for Z-mount, highlighting a possible strategic move by Nikon to limit Sigma's market access and protect its own market share. The situation has caused frustration among photographers and industry insiders, raising questions about Nikon's motives and the future of third-party lens compatibility on Z-mount.