Sigma and Canon have recently joined forces, leading to widespread joy amongst Canon users. While Sigma is only catering to the RF-S mount, this leaves a lot to be desired for full frame users. But even before the announcement, Canon users were relying on Sigma lenses, and there are some true gems that one should consider getting their hands on if they can. Here are some options that won our hearts in our reviews.
Sigma 8mm f3.5 EX DG

The Sigma 8mm is a fish-eye lens with a 180° angle of view. The lens is relatively small, sturdy, and features a large, rubber-rimmed focusing ring. Given how wide-angle the lens is, it quickly focuses, and does so without much fuss. “In very low light situations, it does take an extra moment or two to lock onto a subject, but I attribute this to the not-so-fast f3.5 maximum aperture,” we explained. Now, the images offer a nice circular shape, and you see nice sharpness across the frame. There is some color fringing, and that’s the only challenge for the lens.
Sigma 28mm f1.4 DG HSM Art

The Sigma 28mm is an exceptional offering, with a close focusing distance of 28cm and a large, rubberized focusing ring. The weather sealing is great, and the design is also pretty straightforward. We did not face challenges when it came to focusing, and we only missed focus when someone was coming close to the lens. “The Sigma 28mm f1.4 DG HSM Art has some beautiful image quality to it. A little bit wider than the 35mm focal length, it’s going to be perfect for a lot of photographers who tend to look at a scene and want to capture the world just as they saw it,” we said, speaking about its performance. It is also sharp, wide open, and soft bokeh will make you happy.
Sigma 40mm f1.4

The 40mm is closer to the human eye, which means it’s better for photographers who shoot outdoors. As you can see, the lens can withstand some splashes and focuses quickly, making it an ideal option for documentary photographers. The image quality is what makes it exceptional. “During our tests, we shot images at 3200K and 5600K color balance to emulate the look of film and of many of the cinematic scenes that you probably know and love,” we said in our review. The bokeh is smooth, and the colors are muted but adorable.
Sigma 105mm f1.4 DG HSM Art

The Sigma 105mm is a large lens, but ideal for many portrait photographers. The lens has 9 aperture blades, weighs 1,645g, but is built really well. “Having shot with the Sigma 105mm f1.4 DG HSM Art lens in a variety of lighting scenarios, this lens truly lives up to Sigma’s marketing claims of it being a ‘Bokeh Master,'” we said in our review. It has beautiful fall-off transitions and truly gorgeous bokeh, as one would expect. There is plenty of sharpness, and you also get quick focusing ability. It is a lens that will give you images that you will adore.
