With a maximum angle of view in the middle between Canon 16-35mm and Sigma 14-24mm lenses, Tamron SP 15-30mm f / 2.8 at VC USD is the best of both worlds in many ways. It combines f / 2.8 Sigma aperture is fast and steady and the added advantage of optical stabilization as shown in Canon. All of this constitutes a solid compromise, enhanced by Tamron's build quality and handling, and a full construction with weather seal and fluorine coating on the front element.
One drawback with the Tamron lens compared to Canon is that it weighs almost twice as much. However, this is lighter than the two Sigma full frame lenses. The zoom and focus rings work with great precision, with the focus ring located near the back of the lens, and there is a focus distance scale to aid precision.
High-quality optics in internal lens construction includes specially developed XGM (eXpanded Glass Molded Aspherical) elements and some LD (Low Spread) elements. Ghost images and flares are a constant danger with this type of lens, but Tamron defends itself with two types of conventional and nanostructure coatings.
Sharpness throughout the frame isn't as impressive as the Sigma 14-24mm lens when shot wide open, based on our lab tests. However, if you reduce the one-stop aperture to f / 4, Tamron attracts levels and provides better angles and angles than Canon 16-35mm and Sigma 12-24mm lenses. Overall, this is a great target for its price and is the best choice if you want twice as fast opening than a fast opening with optical stabilization to provide a four-step advantage.
This lens has a built-in lens hood, although the Lee Filter adapter is available if you want to associate it with some filter action. The ring-type ultrasonic autofocus system is designed to be super fast, with impressive high-torque specs, giving this lens real versatility in a variety of shooting situations.
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