The new lens has improved optical performance and new features, including the VC (Vibration Compensation), moisture-resistant construction, and Fluorine coating, as well as the first implementation of Tamron’s new HLD (High/Low Torque Modulated Drive Motor). The lens also sports a new exterior design.
The optical design consists of 16 lens elements in 11 groups. Special lens elements are utilized in an optimum configuration of one LD (Low Dispersion) lens element, one XLD glass element, one molded glass aspherical element, and one hybrid aspherical lens. While curbing an increase in the size of the optical system, the company says the new lens very effectively compensates for a wide variety of aberrations in the entire zoom range, including transverse chromatic aberration, comatic aberration and distortions that tend to become more prominent with a wide-angle lens.
BBAR (Broad-Band Anti-Reflection) Coating and the optical design inhibit internal reflections in the lens barrel and also curb the effects of harmful light rays that tend to occur with a wide-angle lens, achieving excellent resistance against ghosting and flare seen in backlighting situations.
Optimizing the actuator and the control algorithm has made it possible to incorporate VC while maintaining the compact design of the previous model.
The HLD is capable of smoothly controlling the AF mechanism even with the lens’ large focusing lens elements. When shooting in AF mode, the Full-time Manual Focus override allows you to instantly make fine focusing adjustments manually, without having to switch between modes.
The front lens element is coated with a protective fluorine compound that is water- and oil-repellant. The lens surface is easier to wipe clean and is less vulnerable to the damaging effects of dirt, dust, moisture and fingerprints. There also are leak-proof seals throughout the lens barrel.
An electromagnetic diaphragm system, which has been a standard feature for Canon-mount lenses, is now employed in Nikon-mount lenses. More precise diaphragm and aperture control is possible.
The optional TAP-in Console provides a USB connection to your personal computer, enabling you to easily update your lens’s firmware as well as customize features including fine adjustments to the AF and VC.
Filter size is 77 mm, lens length is 84.6 mm (Canon) / 82.1 mm (Nikon), and weight is 440 g.
The Tamron 10-24mm f/3.5-4.5 Di II VC HLD in Canon and Nikon mount models is slated for late February launch in Japan, with Canada to follow.