Tamron Reveals World's First 18-400mm All-in-One Zoom Lens; More Info at B&H Photo Video NEW YORK, NY--(Marketwired - June 23, 2017) - B&H Photo would like to share the announcement of the Tamron 18-400mm f/3.5-6.3 Di II VC HLD Lens, a world's first 22.2x zoom designed for APS-C...