Sigma AF50mm F 1.4 EX DG HSM or original factory 50 1.4 usm, which should I choose?

As a standard lens, Sigma 50mm F 1.4 EX DG HSM is very different from other brands in terms of workmanship and structural settings. The diameter of 77mm, all-metal lens barrel, wide focus ring and HSM ultrasonic motor are very advantageous for fixed focus lens. The front lens is much larger than the original 50mm F 1.4 lens of major manufacturers. It is helpful to improve imaging, and the imaging clarity of each aperture is even higher than that of the original lens. Sigma 50mm F 1.4 EX DG HSM is a sub-factory lens, but it exceeds the quality of the original lens, which is why many enthusiasts choose it instead of the original lens.

In terms of lens structure, this lens adopts 6 groups of 8 lenses, and uses aspheric lenses that can effectively eliminate aberrations, and also uses super multi-layer coating technology on the lenses, so it can effectively reduce the generation of ghosts and glare.

Nine circular aperture blades make the transition from focus to focus very natural. The focusing system adopts Sigma HSM ultrasonic motor, which has faster focusing speed and quieter focusing process.

In other respects, this lens has a shortest shooting distance of 45cm, a maximum shooting magnification of 1:7.4, a filter size of 77mm and a weight of 505 grams.

Its compatible bayonets are Canon, Nikon, Sony and Pentax.

Sigma 50mm F 1.4 EX DG HSM is the most expensive standard lens with autofocus at present, and the actual imaging effect is excellent. Compared with the original lens, the sharpness is worse, which is a sharp weapon for portrait shooting.

Sony's 50mm F 1.4 lens is a high-brightness 50mm standard lens with a large aperture of F 1.4.

Show images in natural light or use a large aperture to achieve defocusing.

Combined with the large aperture and super anti-shake function of F 1.4, you can shoot by hand under the condition of slow shutter.

Circular aperture, beautiful defocus.

APS format digital SLR 75mm medium telephoto lens (35mm equivalent) is suitable for portrait shooting.

Advantages: large caliber, good color reproduction and easy to carry.