Tamron 20-40mm F2.8 for full-frame Sony E-mount cameras announced at $699

Tamron has announced the launch of a new 20-40mm F2.8 Di II VXD zoom lens for full-frame Sony E-mount cameras. This constant F2.8 zoom lens offers a unique focal length range and is constructed of 12 elements in 11 groups, including four LD (low dispersion) elements, two GM (Glass Molded Aspherical) elements and one Hybrid Aspherical element.

TTArtisan releases $55 25mm F2 lens for APS-C camera systems

Optics manufacturer TTArtisan has announced a fully-manual 25mm F2 lens for APS-C mirrorless camera mounts that costs just $55. The lens is constructed of seven elements in five groups and offers a roughly 38mm full-frame equivalent focal length (except on Micro Four Thirds where it’s a 50mm equiv).