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Changes to the texture of the zoom ring surface and focus ring surface improve the grip and enhance ease of operation. The lens uses a new design that the company says is to become a hallmark of Tamron lenses that come in the future. The successor to the 28-75mm f/2.8 Di III RXD, the 28-75mm f/2.8 Di III VXD G2 retains the compact size of the predecessor while incorporating a new optical construction based on a design that it says has been revamped to enhance the imaging performance and is compatible with the latest model digital cameras that have increased resolution. The autofocus system of the lens is Tamron’s VXD linear focus mechanism which provides high-speed, high precision focusing with minimal noise. The lens also supports the ability to switch the focus ring from focus to aperture adjustment, and custom functions can be assigned from the camera body. It also allows a photographer to set a desired focus position and move the focus to the recorded point by a single press of the Focus Set Button. The lens features custom switch settings that allow two focus positions to be set and the lens to be quickly shifted between each. Made especially with travel photographers in mind, Tamron says that this one lens would allow them to shoot a range of photos well, from sunrise and sunset shots, shoot distinctive exterior buildings and interiors like restaurants, and twilight and nightscape photos. As such, it is the world’s first mirrorless zoom lens that features a maximum wide-open aperture of f/2. Tamron says that the 35-150mm f/2-2.8 was designed to cover a wide-angle through telephoto focal range without giving up too much as far as light-gathering capability.