Sigma 135mm F1.8 DG HSM Art Canon vs Sigma 40mm f/1.4 DG HSM Art (Sony E Mount)

Sigma 135mm F1.8 DG HSM Art Canon vs Sigma 40mm f/1.4 DG HSM Art (Sony E Mount)

When comparing Sigma 40mm f/1.4 DG HSM Art (Sony E Mount) and Sigma 135mm F1.8 DG HSM Art Canon, which one is better?

1. Lens Mount Comparison

The lenses each feature different lens mounts — the Sigma 135mm F1.8 DG HSM Art - Canon features a Canon EF while the Sigma 40mm f/1.4 DG HSM Art - (Sony E Mount) 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

The Sigma 40mm f/1.4 DG HSM Art - (Sony E Mount) has the largest aperture of the two lenses at 1.4 compared to the 1.8 aperture of Sigma 135mm F1.8 DG HSM Art - Canon. This means that you get more light to your sensor using Sigma 40mm f/1.4 DG HSM Art - (Sony E Mount) wide open, and therefore it might be a better lens in dark situations.

Winner: Sigma 40mm f/1.4 DG HSM Art (Sony E Mount)

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.

3. Anamorphic Comparison

Neither Sigma 40mm f/1.4 DG HSM Art - (Sony E Mount) or Sigma 135mm F1.8 DG HSM Art - Canon are anamorphic lenses.

Winner: Tied — Neither have this feature

Regarding anamorphic: Anamorphic lenses are usually used on cinema cameras and squeezes the image when its recorded, which gives the final, stretched out, image oval bokeh and a different angle of view. The most common lenses, however, are not anamorphic but spherical, which gives a spherical bokeh and is a much cheaper lens design.

4. Lens Type Comparison

Both lenses are Prime lenses, which means that you can choose both Sigma 135mm F1.8 DG HSM Art - Canon or Sigma 40mm f/1.4 DG HSM Art - (Sony E Mount) if you're looking for that type of lens.

Winner: Tied

Regarding type: There are two types of lenses; zoom lenses and prime lenses. Prime lenses have a fixed focal length and cannot be zoomed, while zoom lenses have a focal length range and can be zoomed in to get closer to the subject. Prime lenses are usually lighter, cheaper and let in more light. Zoom lenses are more versatile but are more expensive since they require a more advanced lens design.

5. Autofocus Comparison

Both lenses have autofocus, which means that they're both great at focusing targets while taking photographs or filming video. Just remember, most cameras do not offer good autofocus while filming video.

Winner: Tied — both have this feature

Regarding autofocus: Lenses with autofocus help you focus when shooting pictures or video. If a lens only has manual focus it means that you have to focus manually by adjusting the focus wheel on the lens. Most cinema lenses do not use autofocus and are manual focus only.

Specifications

Full specifications table of Sigma 135mm F1.8 DG HSM Art Canon and Sigma 40mm f/1.4 DG HSM Art (Sony E Mount):

	Sigma 135mm F1.8 DG HSM Art - Canon	Sigma 40mm f/1.4 DG HSM Art - (Sony E Mount)
	Price ➔	Price ➔
Brand	Sigma	Sigma
Weight	Missing	1200 g
Lens Mount	Canon EF	Sony E
Focal Length	135 mm	40 mm
Largest Aperture	1.8	1.4
Anamorphic	No	No
Minimum Focus Distance	Missing	40 cm
Type	Prime	Prime
Aperture Range	Missing	1.4 - 16
Filter Thread Diameter	Missing	82
Aperture Blades	Missing	9
Lens Groups	Missing	12
Lens Elements	Missing	16
Image Stabilization	Missing	No
Autofocus	Evet	Evet
Macro	Missing	No
Weather Seal	Missing	Yes
Full Frame Coverage	Missing	Yes
Lens Hood Included	Missing	Yes