Viltrox, a third-party lens manufacturer, confirms it is working on a firmware update to improve compatibility and performance of its lenses on the Sony a7 V, dispelling rumors that Sony intentionally degraded third-party lens performance. The issues are attributed to normal post-release optimizations, and Sony has stated it did not make any intentional changes to harm third-party lenses, with manufacturers like Viltrox actively working to resolve the compatibility issues.
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.
