Compare lenses

Sigma 17-40mm f/1.8 DC Art vs Sigma 28-45mm f/1.8 DG DN Art

The Sigma 17-40mm f/1.8 DC Art and the Sigma 28-45mm f/1.8 DG DN Art side by side, computed from this guide's catalogue.

Which to pick

Pick the Sigma 17-40mm f/1.8 DC Art if you want more reach (to 60mm equivalent); a design for APS-C, which usually means smaller and lighter; a fit on more cameras (115 against 66 in this guide); and a lighter lens (525 g against 950 g). Pick the Sigma 28-45mm f/1.8 DG DN Art if you want coverage of full frame, so it suits the larger-sensor bodies too.

Still torn? Ask the guide about the Sigma 17-40mm f/1.8 DC Art and the Sigma 28-45mm f/1.8 DG DN Art

Specs side by side

Rows that differ are in full colour; the better value is marked where one is better by any measure.
Spec	Sigma 17-40mm f/1.8 DC Art	Sigma 28-45mm f/1.8 DG DN Art
Maker	Sigma	Sigma
Focal length	17-40mm (zoom)	28-45mm (zoom)
Full-frame equivalent	26-60mm on APS-C	28-45mm
Maximum aperture	f/1.8	f/1.8
Made for	APS-C	Full frame
Mounts	Sony E, Fujifilm X, L-Mount, Canon RF	Sony E, L-Mount
Stabilised	no	no
Autofocus	yes	yes
Zoom range	2.4×more range	1.6×
Weight	525 glighter	950 g
Cameras it fits	115 in this guidefits more cameras	66 in this guide

Focal range, in full-frame terms

Sigma 17-40mm f/1.8 DC Art: 17-40mm on APS-C, like 26-60mm.

Sigma 28-45mm f/1.8 DG DN Art: 28-45mm.

Aperture

Sigma 17-40mm f/1.8 DC Art: f/1.8 wide open.

Sigma 28-45mm f/1.8 DG DN Art: f/1.8 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

66 cameras in this guide take both, so either works on the same body. In all, the Sigma 17-40mm f/1.8 DC Art fits 115 and the Sigma 28-45mm f/1.8 DG DN Art 66.