- High-performance while maintaing constant f/4 aperture
- Moisture-Resistant Construction with layered protection
- 20 elements in 14 groups with 3 LD glass elements
- Internal zooming mechanism prevents lens "sagging"
Details: Class-leading magnification ratio and MOD Model A034 boasts the highest-in-class maximum magnification ratio of 1:3.1 and the shortest-in-class* MOD of 37.4 in. The shorter working distance enables photographers to capture close-up images of small objects like flowers while using a telephoto zoom. *Among 70-200mm F/4 class interchangeable lenses for full-frame DSLR cameras. Highly reliable internal zoom mechanism Thanks to an internal zoom mechanism, the physical length of the A034 does not change during zooming, thereby minimizing changes in the center of gravity and providing more stable use and operation. In addition, it's not necessary for the photographer to move backwards even when shooting space is limited, for instance, when photographing through a wire mesh fence at a zoo. So-called "zoom creep" is impossible because the overall length never extends. Furthermore, the design provides a very robust and sturdy feeling, and the non-rotating front element makes the use of polarizing filters much easier. High-speed Dual MPU plus outstanding Vibration Compensation The Dual MPU system includes two high-performance MPUs (micro-processor units) dedicated to VC processing and lens system control. Both MPUs have a DSP (Digital Signal Processing) block that provides high-speed digital signal processing, improving the computing power of the entire system. This new control system achieves high-speed and precise AF performance as well as assured VC effects. Excellent autofocus performance Model A034's AF drive system uses a USD (Ultrasonic Silent Drive) ring-type ultrasonic motor for outstanding responsiveness and to ensure fast, precise focusing. Plus, the new zoom is equipped with a Full-time Manual Focus override mechanism that enables a photographer shooting with AF to instantly make fine manual focusing adjustments without switching the AF-MF mode switch.
Package Dimensions: 10.3 x 6.1 x 5.4 inches
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