Sigma 23mm F1.4 DC DN | C | Leica Fit

Designed for crop sensor mirrorless cameras, the 23mm has an equivalent focal length of 35mm, making it a versatile wide-standard prime that is well suited to street photography, landscapes, wider-angle portraits, weddings and travel. Its F1.4 aperture ensures fast shutter speeds for working hand-held in low-light conditions, and also provides a very shallow depth-of-field for blurry backgrounds.

Despite its very fast aperture the lens weighs only 340g, so it’s easily light enough to carry around all day, and the build is sleek yet robust. Optical performance is exceptional, with very sharp results across the whole frame at all aperture settings. The lens pairs perfectly with the other DC DN primes, which also have F1.4 apertures.

As with the other optics in Sigma’s F1.4 DC DN range, the 23mm F1.4 is constructed with a strong and light polymer that ensures a strong build while keeping the lens portable. A large, rubberised focus ring makes manual focusing highly intuitive, and a petal-type lens hood helps control flare in bright sunlight. 

 Despite weighing only 340g, the 23mm F1.4 DC DN | C delivers outstanding optical quality across the whole frame, even on high-resolution sensors. Its advanced optical design is made up of 13 elements in 10 groups, including 2 aspherical elements and 3 SLD elements. These ensure razor-sharp results and help to eliminate common optical issues such as chromatic aberration, flare and vignetting. 

The lens also utilises in-camera digital correction to fine-tune the final result. 

Important for a wide-angle lens, optical performance is maintained across the whole frame, meaning fine detail is captured perfectly right into the corners. 

Chromatic aberration is very well-controlled around areas of high contrast, and vignetting is minimal even wide-open. The lens has advanced optical coatings which reduce flare and ghosting when working in bright direct sunlight – important on a wide-angle lens.