Compare lenses

Fujifilm XF 18-120mm f/4 LM PZ WR vs Sigma 50-120mm f/2.8 DC OS Contemporary

The Fujifilm XF 18-120mm f/4 LM PZ WR and the Sigma 50-120mm f/2.8 DC OS Contemporary side by side, computed from this guide's catalogue.

Which to pick

Pick the Fujifilm XF 18-120mm f/4 LM PZ WR if you want a wider view (from 27mm equivalent). Pick the Sigma 50-120mm f/2.8 DC OS Contemporary if you want a brighter f/2.8 (1.0 stops more light), for dim light and softer backgrounds; optical stabilisation, which helps most on bodies without it; a fit on more cameras (90 against 31 in this guide); and a lighter lens (390 g against 460 g).

Still torn? Ask the guide about the Fujifilm XF 18-120mm f/4 LM PZ WR and the Sigma 50-120mm f/2.8 DC OS Contemporary

Specs side by side

Rows that differ are in full colour; the better value is marked where one is better by any measure.
Spec	Fujifilm XF 18-120mm f/4 LM PZ WR	Sigma 50-120mm f/2.8 DC OS Contemporary
Maker	Fujifilm	Sigma
Focal length	18-120mm (zoom)	50-120mm (zoom)
Full-frame equivalent	27-180mm on APS-C	75-180mm on APS-C
Maximum aperture	f/4	f/2.8brighter
Made for	APS-C	APS-C
Mounts	Fujifilm X	Sony E, Fujifilm X, Canon RF
Stabilised	no	yesstabilised
Autofocus	yes	yes
Zoom range	6.7×more range	2.4×
Weight	460 g	390 glighter
Cameras it fits	31 in this guide	90 in this guidefits more cameras

Focal range, in full-frame terms

Fujifilm XF 18-120mm f/4 LM PZ WR: 18-120mm on APS-C, like 27-180mm.

Sigma 50-120mm f/2.8 DC OS Contemporary: 50-120mm on APS-C, like 75-180mm.

Aperture

Fujifilm XF 18-120mm f/4 LM PZ WR: f/4 wide open.

Sigma 50-120mm f/2.8 DC OS Contemporary: f/2.8 wide open.

Each opening drawn to scale against f/1.4: a smaller f-number lets in more light and blurs the background more.

Field of view

How wide each sees, at each end, on the sensor it was made for.

Cameras they fit

31 cameras in this guide take both, so either works on the same body. In all, the Fujifilm XF 18-120mm f/4 LM PZ WR fits 31 and the Sigma 50-120mm f/2.8 DC OS Contemporary 90.