I received Sigma’s first APS-C specific zoom lens for mirrorless cameras (the Sigma 18-50mm F2.8 DC DN) back in October of 2021. At that stage the Fujifilm X-mount was closed to most third party development, so the lens was released only on Sony E-mount and Leica L-mount. That started to change in 2022, so Sigma has been slowly rereleasing some of its DN (Sigma’s designation for mirrorless designs) lenses on Fuji’s X-mount. I’ve considered this move worthy of a second look at many of these lenses because of two reasons. The first is that the competition is quite different on Fuji than it is on Sony, with more (and more premium) options as Fuji has been solely focused on APS-C rather than investing most of its energy on full frame. The second is that Fuji has the industries highest resolution APS-C sensor, the 40MP X-Trans monster found in cameras like the X-H2 that I’m doing this review on. That creates a very different optical challenge for lenses than the 24MP Sony sensor I did that review on. How does the Sigma 18-50X (as we’ll call it here) handle these new challenges? You can find my thoughts in the video review below or in my text review of the lens.

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Thanks to Gentec (Sigma’ distributer in Canada) for sending me a 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 on the 40MP Fujifilm X-H2 that I reviewed here.

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This review of the 18-50X is not a whole new review, but rather an update on how it compares to the competition on Fuji along with reviews of the autofocus and sensor performance on this new platform.

The 18-50x is one of six lenses released by Sigma for APS-C mirrorless now, and all of these lenses are now available on Fuji. You can click on any of the list to see my reviews. Here’s a look at the DC (APS-C) DN (mirrorless) lineup thus far.

1. Sigma 16mm F1.4
2. Sigma 23mm F1.4
3. Sigma 30mm F1.4
4. Sigma 56mm F1.4
5. Sigma 10-18mm F2.8
6. Sigma 18-50mm F2.8

Sigma’s DC DN lenses have all fallen under the umbrella of their Contemporary lineup, and while Sigma has proven willing to experiment with new features and design elements within the ART and Sport lineups, the Contemporary lenses have all stuck to a fairly rigid design formula. That continues to be the case here, so this little zoom mostly looks and handles pretty similarly to other lenses in the lineup.

On Fuji there are three primary competitors: the Tamron 17-70mm F2.8 VC RXD (the lone shared competitor from Sony), the Fujifilm XF 16-55mm F2.8 R LM, and the “kit lens” Fujifilm XF 18-55mm F2.8-4 LM OIS lens. The weaknesses of the 18-50X compared to this field are 1) a smaller zoom range than any of the competing lenses 2) No image stabilization (the Tamron and Fuji 18-55mm have stabilization and 3) Fewer features than some competitors. The Sigma strengths are 1) Cheapest price 2) Smallest size and lowest weight 3) Higher magnification than any competing lenses. Here’s a breakdown of the specs by comparison:

We’ll explore those differences a little further in the build and handling section below.

This is an extremely useful range, allowing you to go from moderately wide angle (27mm full frame equivalent) to short telephoto (75mm equivalent). Here’s a look at a scene from the various marked positions on the zoom range (18, 24, 38, 35, and 50mm):

The Sigma 10-18mm F2.8 DC DN carries a price tag of $599 USD. Should this lens jump to the top of your list when you are looking for a wide angle zoom lens for your camera? Here’s the original review for more information.

Images of the Sigma 18-50mm X-Mount

Images Taken with the Sigma 18-50mm X-mount

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GEAR USED:

Purchase the Sigma 18-50mm F2.8 DN @ B&H Photo | Adorama | Amazon | Camera Canada | Amazon Canada | Amazon UK | Amazon Germany

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Purchase the Sigma 10-18mm F2.8 DN @ B&H Photo | Adorama | Amazon | Camera Canada | Amazon Canada | Amazon UK | Amazon Germany

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Purchase the Fujifilm X-H2 @ B&H Photo | Adorama | Amazon | Camera Canada | Amazon Canada | Amazon UK | Amazon Germany 

Purchase the Fujifilm X-T5 @ B&H Photo | Amazon | Camera Canada | Amazon Canada | Amazon UK | Find it Used at KEH 

Purchase the Fujifilm X-S20 @ B&H Photo | Adorama  | Amazon | Camera Canada | Amazon Canada | Amazon UK | Amazon Germany | Ebay 

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