Despite its large aperture of F4, the Sigma 300-600mm F4 DG OS | Sports features a lightweight focus lens group thanks to the use of a high-thrust HLA (High-response Linear Actuator), optimized optical power arrangement and state-of-the-art glass materials. The result is high-speed autofocus functionality with outstanding accuracy.

Sigma claims prime-level image quality plus constant f/4 maximum aperture with the new 300-600mm telephoto zoom lens. The post High-end Sigma 300-600mm F4 DG OS Sports ultra-telephoto zoom appeared first on Amateur Photographer.

When you use DPReview links to buy products, the site may earn a commission. Image: Sigma Sigma has announced the 16-300mm F3.5-6.7 DC OS Contemporary lens, a wide-angle to telephoto, image-stabilized zoom for APS-C cameras that provides a 24-450mm equivalent focal length.