This week, Tamron has announced two updated versions of their popular 70-200mm and 10-24mm zoom lenses.
Tamron has boldly announced that this lens offers the “the largest focal length range in its class (35mm equivalent is 16mm to 37mm)” One notable improvement for this APS-C wide angle zoom would be the inclusion of Vibration Compensation to what they claim to be 4 stops without increasing the size of the lens. The HLD refers to a newly designed High/Low Torque-Modulated Drive motor that offers smooth control throughout the zoom range. The lens’ foremost outer glass is coated with a fluorine compound that repels water and oil and the moving parts of the lens are protective by leak proof seals. The electromagnetic diapraghm system that has been used on Canon mounted Tamron lenses has been applied to their Nikon mounts, meaning the diaphragms are controlled by electromagnetic pulse signaling.
This new full frame zoom lens offers Vibration Compensation to 5 stops, faster autofocus and accuracy and a reduced minimum focus distance of 37.4 inches as opposed to the previous model’s 50.7 inches. This has largely been achieved through revamped optical and mechanical design: circular 9-blade diaphragm, 23 low dispersion elements in 17 groups reduce chromatic aberrations, and reduced minimal focus distance. Additionally, electromagnetic diaphragm control, a newly implemented AF algorithm and two microcomputers have contributed to faster focus speed and accuracy.
Here are the specs rom Tamron’s Press Release: