Lens comparison · Fujifilm X · updated 5 November 2026

Fujifilm XC 15-45mm f/3.5-5.6 OIS PZ vs Sigma 18-50mm f/2.8 DC DN Contemporary

Fujifilm XC 15-45mm f/3.5-5.6 OIS PZ15-45mm · f/3.5-5.6 · 135g
Sigma 18-50mm f/2.8 DC DN Contemporary18-50mm · f/2.8 · 290g
Verdict

Fujifilm XC 15-45mm f/3.5-5.6 OIS PZ has more in its favour on paper. The 18-50mm f/2.8 DC DN Contemporary gathers more light for low light and background blur; the XC 15-45mm f/3.5-5.6 OIS PZ is lighter and cheaper. The Fujifilm lens is the mount maker's own, while the Sigma is a third-party alternative.

Choose the XC 15-45mm f/3.5-5.6 OIS PZ for

  • less weight (135g vs 290g)
  • a lower price (about £130 vs £460)
  • a wider starting focal length (15mm vs 18mm)
  • optical stabilisation

Choose the 18-50mm f/2.8 DC DN Contemporary for

  • a brighter maximum aperture (f/2.8, about 0.6 stops more light)
  • more reach (50mm vs 45mm)
  • weather sealing
  • a constant aperture through the zoom range
XC 15-45mm f/3.5-5.6 OIS PZ18-50mm f/2.8 DC DN Contemporary
BrandFujifilmSigma
Focal length15-45mm18-50mm
Maximum aperturef/3.5-5.6f/2.8
Weight135 g290 g
StabilisationYesNo
Weather sealingNoYes
Filter size52mm55mm
Made forAPSCAPSC
New price£249£499
Used at MPB (Fujifilm X)£110–£147£429–£494

More lens comparisons

E 16-55mm f/2.8 G vs 18-50mm f/2.8 DC DN ContemporaryRF-S 18-45mm f/4.5-6.3 IS STM vs 18-50mm f/2.8 DC DN Contemporary

See all Fujifilm X cameras and lenses.

Frequently asked questions

Is the Fujifilm XC 15-45mm f/3.5-5.6 OIS PZ better than the Sigma 18-50mm f/2.8 DC DN Contemporary?

The XC 15-45mm f/3.5-5.6 OIS PZ offers less weight (135g vs 290g), a lower price (about £130 vs £460), a wider starting focal length (15mm vs 18mm); the 18-50mm f/2.8 DC DN Contemporary offers a brighter maximum aperture (f/2.8, about 0.6 stops more light), more reach (50mm vs 45mm), weather sealing.

Which is better value, the XC 15-45mm f/3.5-5.6 OIS PZ or the 18-50mm f/2.8 DC DN Contemporary?

On Fujifilm X, the Fujifilm XC 15-45mm f/3.5-5.6 OIS PZ costs about £130 against about £460 for the Sigma 18-50mm f/2.8 DC DN Contemporary (MPB used where listed, otherwise new; checked 5 November 2026).

Is f/2.8 worth it over f/3.5?

f/2.8 gathers about 0.6 stops more light, which helps indoors, at night and for background blur. If you mostly shoot in good light, the slower lens is usually lighter and cheaper.

Do both lenses fit the same cameras?

Both are available for Fujifilm X (and other mounts: Sony E / FE, Canon RF / RF-S, L-Mount). Both are made for crop sensors.