The front of the lens is also larger in diameter than Tokina’s previous 11-16mm wide-angle zooms. Unlike some wide-angle zooms, it doesn’t feature optical image stabilisation to counteract handshake, but this isn’t as essential on a lens where camera shake isn’t accentuated to the same degree it is on longer telephoto zoom lenses.Īn internal focusing system ensures the front element doesn’t rotate when zooming, which is important for those who regularly use polarisers or other manually adjustable filters such as a variable ND grad. The lens has a minimum aperture of f/22 and relies on the manufacturer’s multilayer film coatings to reduce internal reflections that can cause unwelcome ghosting and flare. Towards the front of the lens group there’s also what’s known as a P-MO aspherical lens that contributes towards the bulbous appearance of the front element. The construction of the lens sandwiches two glass moulded aspherical lens elements between three super-low-dispersion glass elements in an effort to keep contrast and sharpness high, while minimising spherical aberrations. Modifying the optical construction has increased the weight of the lens very slightly from 550g to 560g, and the minimum focus distance is reduced to 28cm. Unlike the Tokina AT-X 11-16mm f/2.8 PRO DX II, which had a construction of 13 elements in 11 groups, this lens incorporates 14 elements in 12 groups with nine aperture blades. Tokina has also reworked the optical design. The extra reach you get at the long end brings it more in line with the other wide-angle zooms on the market. The focal length is equivalent to 16.5-30mm when it’s paired with Nikon APS-C DSLRs that enforce a 1.5x crop factor, whereas it’s equivalent to 17.6-32mm when it’s mounted to Canon APS-C DSLRs. This third-generation Tokina wide-angle lens covers a broader focal range than the two 11-16mm zooms that have come before it, and therefore it’s suitable for a wide variety of applications from landscapes to interior and architecture work. On paper the lens looks like an excellent choice for anyone looking for a faster and wider alternative to the Tokina AT-X 12-28mm f/4 PRO DX lens, but is it worth the money or are there better options out there? Tokina AT-X 11-20mm f/2.8 PRO DX – Features
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