The Tamron 10-24mm f/3.5-4.5 Di II is an ultra wide-angle zoom lens for Sony A-mount crop-frame cameras. At 10mm, it’s perfect for capturing sweeping landscapes and cityscapes, with the flexibility to zoom in to narrow the field of view. By utilizing three glass-molded aspherical lenses, as well as three hybrid aspherical lenses, the Tamron 10-24mm provides high quality images with minimum optical aberrations, coma, and barrel distortion. It can focus as close as 9.45" throughout the zoom range, allowing the user to creatively exaggerate perspective. With a relatively small 3.9" in length, this is a great option to have handy for all types of photography.