Compare lenses

Fujifilm MKX 18-55mm T2.9 vs Sigma 18-50mm f/2.8 DC DN Contemporary

The Fujifilm MKX 18-55mm T2.9 and the Sigma 18-50mm f/2.8 DC DN Contemporary side by side, computed from this guide's catalogue.

Which to pick

Pick the Sigma 18-50mm f/2.8 DC DN Contemporary if you want autofocus, a fit on more cameras (115 against 31 in this guide) and a lighter lens (290 g against 1100 g). On these specs the Fujifilm MKX 18-55mm T2.9 has no clear advantage: choose it if the price, the handling or a lens you own decides it.

Still torn? Ask the guide about the Fujifilm MKX 18-55mm T2.9 and the Sigma 18-50mm f/2.8 DC DN 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 MKX 18-55mm T2.9	Sigma 18-50mm f/2.8 DC DN Contemporary
Maker	Fujifilm	Sigma
Focal length	18-55mm (zoom)	18-50mm (zoom)
Full-frame equivalent	27-82mm on APS-C	27-75mm on APS-C
Maximum aperture	f/2.9	f/2.8
Made for	APS-C	APS-C
Mounts	Fujifilm X	Sony E, Fujifilm X, L-Mount, Canon RF
Stabilised	no	no
Autofocus	no, manual focus	yesautofocus
Zoom range	3.1×	2.8×
Weight	1100 g	290 glighter
Cameras it fits	31 in this guide	115 in this guidefits more cameras

Focal range, in full-frame terms

Fujifilm MKX 18-55mm T2.9: 18-55mm on APS-C, like 27-82mm.

Sigma 18-50mm f/2.8 DC DN Contemporary: 18-50mm on APS-C, like 27-75mm.

Aperture

Fujifilm MKX 18-55mm T2.9: f/2.9 wide open.

Sigma 18-50mm f/2.8 DC DN 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 MKX 18-55mm T2.9 fits 31 and the Sigma 18-50mm f/2.8 DC DN Contemporary 115.