This 30mm f/1.4 DC DN Contemporary Lens fromSigma is a fast and versatile prime lens specifically designed for Canon RF-mount mirrorless cameras. Its bright f/1.4 maximum aperture is advantageous for low-light photography and provides significant control over depth of field, allowing for effective selective focus techniques. The lens's optical construction includes two aspherical elements and one high-refractive index element, which work together to minimize spherical aberrations and distortion, resulting in enhanced clarity and sharpness in image quality. Furthermore, a Super Multi-Layer Coating has been applied to mitigate lens flare and ghosting in challenging lighting situations. This compact prime lens is also equipped with a stepping autofocus motor, ensuring smooth and nearly silent autofocus performance, making it suitable for both still photography and video recording. Additionally, a rubber seal at the lens mount offers protection against dust and other environmental factors.