Canon EF 40mm f/2.8 STM vs Sigma EX 105/2.8 DG OS HSM Macro (Sony)

Canon EF 40mm f/2.8 STM vs Sigma EX 105/2.8 DG OS HSM Macro (Sony)

When comparing Sigma EX 105/2.8 DG OS HSM Macro (Sony) and Canon EF 40mm f/2.8 STM, which one is better?

1. Lens Mount Comparison

The lenses each feature different lens mounts — the Canon EF 40mm f/2.8 STM features a Canon EF while the Sigma EX 105/2.8 DG OS HSM Macro - (Sony) features a Sony E — and because of this the preference varies. If you have a compatible camera, then of course that lens will be a better choice for you.

Winner: Tied — It depends on your gear

Regarding lens mount: Popular lens mounts are Canon RF and EF, Micro Four Thirds and Nikon Z. Different lens mounts lets you connect different lenses to camera bodies, but some might not be compatible. This can be helped by using an adapter, like a Canon EF to RF adapter.

2. Largest Aperture Comparison

Both lenses share the same aperture of 2.8 — this means that you may buy both Canon EF 40mm f/2.8 STM and Sigma EX 105/2.8 DG OS HSM Macro - (Sony) in this regard; they''re the same.

Winner: Tied

Regarding largest aperture: A lower aperture number means that the widest aperture on the lens is larger. This means that more light will hit the sensor and also that the depth of field will be shallower, better separating your subject from the background.

Specifications

Full specifications table of Canon EF 40mm f/2.8 STM and Sigma EX 105/2.8 DG OS HSM Macro (Sony):

	Canon EF 40mm f/2.8 STM	Sigma EX 105/2.8 DG OS HSM Macro - (Sony)
	Price ➔	Price ➔
Brand	Canon	Sigma
Lens Mount	Canon EF	Sony E
Focal Length	40 mm	105 mm
Largest Aperture	2.8	2.8
Anamorphic	No	Missing
Type	Prime	Missing