17-70mm f/2.8 Di III-A VC RXD - Sony E Fit

The Tamron 17-70mm f/2.8 Di III-A VC RXD is a versatile zoom lens designed for Sony E-mount APS-C mirrorless cameras, offering a 25.5-105mm equivalent focal length that spans from wide-angle to short-telephoto perspectives. The constant f/2.8 maximum aperture provides consistent brightness throughout the zoom range and enables greater control over depth of field, making it effective in low-light conditions. The optical design incorporates three aspherical elements and two low-dispersion elements to minimize distortion and chromatic aberration while delivering high sharpness and color accuracy.

The lens features Tamron's RXD autofocus motor for quick and nearly silent focusing performance, with a minimum focusing distance of 7.5 inches and full-time manual focus override capability. Vibration Compensation image stabilization reduces camera shake for steadier handheld shooting in difficult lighting conditions. The moisture-resistant construction and fluorine-coated front element provide durability and protection against environmental conditions, while the nine-blade rounded diaphragm produces pleasing bokeh quality.