New Sigma 135mm f/1.4 Lens Leaks

credits: SonyAlphaRumors

New photos of Sigma’s upcoming 135mm f/1.4 have leaked, giving us the clearest look yet at what is expected to be officially announced on September 9, 2025. Lenses at this focal length with such a fast aperture are practically unheard of, the only real example being the Mitakon Speedmaster 135mm f/1.4 from 2015, of which only 100 copies were ever made. That lens was a monster, weighing about 3 kilograms. Sigma’s version, by comparison, is said to come in at around 1,320 grams. Still no lightweight, but far more practical than its predecessor.

The leaked photos, published by Sonyalpharumors, also include a rough size comparison with Sigma’s 85mm f/1.4 and 105mm f/1.4 primes. While not perfectly to scale, the images suggest the new 135mm will sit somewhere between the two in terms of bulk, larger than the 85mm but a touch smaller than the hefty 105mm. We also know the lens will feature a 105mm filter thread, autofocus, and will be available for both Sony E-mount and L-mount systems.

Early reports claim the bokeh performance is “exceptional” and “almost unique,” which could make it a standout even among Sigma’s already well-regarded fast primes. Whether the difference compared to existing 85mm or 105mm options proves significant remains to be seen, and the final price tag will no doubt play a major role in its success.

You can see full details and leaked images on SonyAlphaRumors’ website here