This New Tamron 50-400mm is Smaller, Lighter than a 100-400mm

Tamron's upcoming telephoto zoom doesn't just pack in more zoom than the competition -- it's also smaller and lighter. The Tamron 50-400mm f4.5-6.3 Di III VC VXD is an 8x zoom telephoto made for Sony E-Mount shooters. The lens is both smaller and lighter than the Sony 100-400mm f4.5-5.6 GM OSS, despite packing in a wider view. And, if past lenses are any indication, it could also be cheaper. Tamron has only announced the development of the lens, with a full launch expected this fall and pricing ...