Sigma has launched lens firmware updates for 3 E-mount lenses, making them appropriate with the Sony a9 III digicam in its class-leading 120 frames-per-second capturing mode. This brings the entire variety of Sigma lenses appropriate with the a9 III to 10. The Sigma 14-24mm f/2.8 DG DN Artwork, 50mm f/1.4 DG DN Artwork, and 105mm f/2.8 DG DN Macro are actually all appropriate with the a9 III’s 120 FPS drive mode, becoming a member of Sigma’s 28-70mm f/2.8, 60-600mm f/4.5-6.3, 100-400mm f/5-6.3, 150-600mm f/5-6.3, 35mm f/1.4, 85mm f/1.4, and 500mm f/5.6 lenses. Nonetheless, there’s a important caveat. The updates might enable these 10 Sigma lenses to work with the Sony a9 III when it shoots at 120 frames per second, however the lenses can’t repeatedly autofocus at this pace. As a substitute, the lenses are solely appropriate with 120 frames per second capturing when utilized in AF-S autofocus drive mode or with guide focus. PetaPixel contacted Sigma, requesting clarifications regarding its lenses and the Sony a9 III, together with questions regarding why lenses can’t be used with AF-C on the a9 III’s quickest capturing speeds. Sigma has but to reply, however the article shall be up to date if the corporate gives extra data. Not even all Sony lenses are totally appropriate with the a9 III’s 120 FPS drive mode. It’s an exceptionally quick capturing pace, and it’s difficult for lenses to maintain up. Sony’s compatibility listing contains many — however not all — of the corporate’s lenses, and a few lenses have restrictions regarding their apertures throughout 60 and 120 FPS capturing.
Whereas Sigma now has 10 lenses that may technically be used to shoot at 120 FPS on the Sony a9 III, all Sigma lenses are nonetheless restricted to a most pace of 15 FPS when used with steady autofocus. Admittedly, that is nonetheless fairly fast and shall be adequate in lots of conditions. Nonetheless, photographers who need to benefit from the a9 III’s spotlight characteristic — high-speed capturing — will nonetheless need to follow Sony’s totally appropriate lenses. Hopefully, this limitation may be addressed in some unspecified time in the future, though it’s not clear exactly who’s chargeable for it within the first place. The consensus lies blame at Sony’s toes, however within the case of the a9 III, there are certainly engineering challenges to realize steady focus at full pace, too. Picture credit: Sigma
