Di II lenses are designed for exclusive use on digital cameras with smaller-size imagers and inherit all of the benefits of Di products. Tamron's new high-power zoom lens is a photographer's dream come true - it is the result of Tamron's continuing mission to develop the world's most unique "one-lens-does-it-all" zooms to satisfy customers' desire. While conventional 35mm film cameras required two lenses to cover 28-388mm, Tamron's new zoom is 13.9X, the world's most powerful zoom delivering enormous photographic freedom in a single compact lens. The life of a digital photographer has never been better.