The original 24mm F1.4 ART was (I believe) the only Sigma ART lens that I missed reviewing at its time of release (in 2015). I rectified that in 2018 when I reviewed the newly released version of the lens for Sony FE (full frame mirrorless). My review of that lens was mixed, as I felt that it (like all of the new Sigma releases for Sony at that time) was compromised by essentially being a “port” of the Canon EF version of the lens (more on that in a moment) and because I felt that Sigma ART lenses had gotten so much better with time (both optically and functionally). Fast forward to 2022, and Sigma has an all new lens designed from the ground up for mirrorless – the Sigma 24mm F1.4 DG DN ART – and it has improved on its predecessors in basically every way. It is released alongside the also new Sigma 20mm F1.4 DN ART, which is an amazing lens that I reviewed here.

DN is the designation Sigma uses for its purpose designed mirrorless lenses, so, while there is an existing 24mm F1.4 ART lens for Sony E and Leica L, that lens is (as noted) a “ported” DSLR lens (that will almost certainly be discontinued in the near future). Because the lens was originally designed for DSLRs, Sigma had to move the optical path forward to achieve proper focus and to accommodate what was essentially a built-in adapter to allow the focus to work properly on Sony and Leica mirrorless. That resulted in the lens being A) bigger and heavier than it needs to be (almost 36mm longer [126mm] and 103g heavier [768g] than the DSLR version) and B) has an adapted autofocus system which works fairly well but not as well as a lens natively designed for mirrorless autofocus. The new 24DN ART is closer in size to the original DSLR lens (75.7mm in diameter and 97.5mm in length) and weighs 150g less at 510g (3 x 3.8” and 18 oz). That makes the new DN lens narrower by a fair bit (almost 10mm) but also a bit longer (7mm) than the original Canon EF 24mm F1.4 ART. The new DN lens is not what you would call a small lens, but it is considerably smaller and lighter than the previous edition, and, more importantly, much closer in size to its main competition – the Sony 24mm F1.4 G Master, which I reviewed here. The GM lens is the same diameter, 5mm shorter, and weighs 65g less, but the two are now similar enough in size that this should be a non-issue…and the Sigma has even more features than the GM!

Sigma has taken a bifurcated approach to lens design on mirrorless, with smaller size, smaller aperture options in their “i-Series” (which they put under their “Contemporary” brand umbrella) and then more robust, larger aperture, professional grade lenses under their “ART” brand. Sigma has been busy over the past year and a half at the 24mm focal length, releasing an extremely compact 24mm F3.5 DN (my review here), a 24mm F2 DN (my review here) and now this new professional grade F1.4 ART lens. Sigma clearly feels like there are separate markets for each of these lenses, and the new 24DN ART is clearly targeted at the audience who would otherwise be considering the G Master.

I’m much more positive about this new ART lens than I was about the former lens, as it seems like the new 24mm F1.4 DN ART is improved in virtually every way. It delivers incredible image quality even at F1.4, focuses accurately, has a very nice build quality (including weather sealing), and has a huge feature set that we will detail in a moment. All of this at a price point that is hundreds less than any competing first party lens, and you’ve got yourself a potential winner…and one easy to make beautiful images with!

So does the Sigma 24mm F1.4 DN ART hold up under intense scrutiny? You can judge for yourself by either watching my video review, reading my text review, or just enjoy the photos below.

Thanks to Gentec (Sigma’s Canadian Distributor) for sending me a pre-release review loaner of this lens. As always, this is a completely independent review. *The tests and most of the photos that I share as a part of my review cycle have been done with the Sony a7IV along with the Sony Alpha 1 which will serve as my benchmark camera for the foreseeable future (my review here).

Photos of the Sigma 24mm F1.4 DN ART

Photos taken with the Sigma 24mm F1.4 DN ART

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