The New Tamron 50-400mm f/4.5-6.3 Di III VC VXD for Sony E-mount mirrorless cameras is an ideal choice for photographing landscapes, wildlife, sports, portraiture, and more. Featuring an 8x zoom ratio that begins at 50mm, this remarkably compact and portable lens offers a length of just 7.2" making it the same size as conventional 100-400mm zoom lenses.