Sigma’s next move in portrait photography
Sigma’s rumored portrait lens pipeline refers to a set of newly patented prime lenses, including ultra-fast 85mm, 105mm, and 135mm designs, that target large-sensor mirrorless cameras and aim to combine premium optical performance with lighter construction for portrait photographers who demand fast autofocus and smooth bokeh. The company has long used its Art series to disrupt first-party makers, and these Sigma portrait lenses suggest that strategy is about to intensify. According to Asobinet, Sigma’s patent P2026079898 describes an 85mm f1.2, a 105mm f1.4-class design, and a revised 135mm f1.4 with different internal groups. One of those, the 85mm f1.2 Art for mirrorless, has already been confirmed and is scheduled for release in September. The rest of the lens development roadmap remains unannounced, but the patent hints that Sigma’s focus on mirrorless portrait photography gear is far from over.
Inside the patents: 85mm, 105mm, and 135mm primes
The patent details give a rare look at how Sigma might refine its portrait toolkit. The 85mm design lists a focal length of 85.00, an F-number of 1.24, and a length of 152.51, pointing to an ultra-fast short telephoto that leans into shallow depth of field. The 105mm example shows a focal length of 105.00, F-number 1.45, and total length of 146.00, positioning it as a potential successor to the “Bokeh Master” DSLR-era 105mm. The 133mm (effectively 135mm class) design has a focal length of 133.00, F-number 1.45, and length of 152.50, and appears to update Sigma’s existing 135mm f1.4 with lighter construction and revised internal groups. Sigma notes that these designs are for large sensor cameras and are intended to be lighter than earlier DSLR lenses, while also supporting features like face-tracking and continuous AF that are crucial for modern mirrorless bodies.
How Sigma’s portrait roadmap challenges Canon, Sony, and Nikon
This emerging lens development roadmap places Sigma in direct competition with marquee first-party portrait primes. The 85mm focal length is already packed with heavy hitters such as the Canon RF 85mm f1.2L USM, Nikon Z 85mm f1.2 S, and Sony FE 85mm f1.4 GM II. To win attention, Sigma cannot rely on price alone; it must deliver weather resistance, strong character, and reliable autofocus in its third-party camera glass. On the longer end, the 105mm space is less crowded, with options like the Sony FE 100mm f2.8 Macro GM, Nikon MC 105mm f2.8 VR S, and various macro-focused lenses from Tamron, Laowa, and IRIX. Here, Sigma has room to create a dedicated portrait specialist rather than another macro hybrid, pushing bokeh quality and low-light performance. If the company brings 85mm and 105mm mirrorless updates to market, it could reset expectations around value in high-end portrait photography gear.
From DSLR legends to mirrorless disruptors
Sigma’s reputation in portrait photography was built on DSLR-era favorites like the 85mm f1.4 and 105mm f1.4, lenses praised for sharpness, image quality, and smooth rendering. The 105mm f1.4 in particular earned the nickname “The Bokeh Master” and was noted for its sharpness, bokeh, image quality, weather resistance, and tripod mount at a price of USD 1,600 (approx. RM7,450). Those lenses, however, were larger, heavier, and relied on screw-drive or ring-type ultrasonic motors, making them less suited to the face-tracking and continuous AF demands of mirrorless systems. Sigma has now discontinued those DSLR versions and officially announced an 85mm f1.2 Art for mirrorless, but has not yet provided a mirrorless 105mm update. The new patent suggests lighter designs with different internal groups, signalling that Sigma intends to modernize its portrait lineup rather than simply re-mount existing formulas.
What photographers should expect next
For working photographers, these patents signal that Sigma portrait lenses will likely continue to prioritize wide apertures, soft bokeh, and competitive pricing against first-party equivalents. The 85mm and 105mm primes are obvious tools for portrait and wedding specialists, but Sigma notes that such focal lengths also suit documentary, events, commercial, and editorial work. Demand will be driven by a mix of price, bokeh softness, and weather sealing rather than focal length alone, since 85mm, 105mm, and 135mm are close neighbors in field of view. The patents also point to Sony E and Leica L mounts as likely candidates, reinforcing Sigma’s commitment to mirrorless ecosystems. Yet patents are not product announcements: many designs never reach stores. Until Sigma reveals more of its lens development roadmap, these new primes remain a promising but unconfirmed glimpse of how third-party camera glass could reshape the portrait photography gear market.