Sigma 10-18mm F/2.8 DC DN Contemporary

Specifications01

MountFUJIFILM X

Focal length10-18mm

Max aperturef/2.8

TypeCinema · Wide · Zoom

Weight250 g

Filter size67 mm

Physical length72.2 mm

Min focus distance0.19 m

Max magnification0.25

Aperture blades7

Optical elements13

Groups10

Lens hoodpetal-shaped, push-on, bayonet mount

Sensor coverage30 mm

Additional Info02

Category["Fujifilm"]

Keywords["Sigma","Ultra-wide","X-mount","Zoom"]

Review AuthorKlaus

Review Rating7.5

Other Featuresdust- & moisture-resistant mount

Review VerdictThe Sigma 10-18mm f/2.8 DC DN Contemporary is a wonder in terms of size and low weight - and it's even capable of delivering very good image quality. The resolution in the image center isn't top of the class but the border quality is still very good at all relevant settings. The corners are also fine at 10mm but suffer very slightly at longer focal lengths although the results stay easily on good level even at f/2.8. However, having said this - the focus field is somewhat uneven which can be noticeable at large apertures. Also - while the results are good on 26mp sensors, it's quite obvious that the pixel level sharpness drops visibly on the new 40mp sensors. That's a story that is going to be repeated with most zoom lenses, though. 40mp APS-C is a bit much, really (a good AI RAW converter goes a long way improving this). Unsurprisingly, image distortions are heavy in RAW images although they stay shy of excessive levels that we have seen elsewhere. There's also heavy RAW vignetting suggesting that the lens is somewhat underdesigned. However, auto-correcting will solve most issue quite nicely. Lateral CAs are quite low already. Sigma didn't go over board with the number of aperture blades which is good news for "sun star" lovers - they show up from about f/8 and are nice from f/11. The flare resistance is pretty good for a zoom lens. The build quality is impressive for a consumer-grade lens. Despite of its low weight it just feels sturdy. If we are nit-picky, we'd point to the extending zoom design and the simple weather sealing which only covers the mount. The AF speed is very decent despite of the use of a stepping motor. The small lens elements certain help here. Overall, it's easy to recommend the lens for use on 26mp cameras. The situation is more difficult at 40mp but then there aren't really any suitable options here at the time of writing either.

Review Criteria{"Build Quality":8,"Optical Quality":7.5,"Price / Performance":10}

Review Published2024-04-22T09:36:50+00:00

Optical Construction13 elements in 10 groups (3x FLD, 1x SLD, 4x aspherical)

Field Notes02

Sigma 10-18mm F2.8 DC DN is an ultra-wide zoom for Fujifilm X APS-C cameras, designed for landscape, interiors, and low-light use with a constant f/2.8 aperture.

AI-assisted summary — verify against linked sources

Catalog note · source: opticallimits