Tamron introduces the new Tamron 18 – 270 F/3.5-6.3 Di II VC PZD
The lens features a newly developed piezo ultrasonic motor, which ensures a silent, precise and extraordinary fast autofocus. Furthermore the unique (VC) vibration technology was improved to allow for a more compact design.
The lens convinces with its high level of usability, featuring a focal length range which covers just about every photographic situation. Its compactness and light-weight construction make it the ideal travel companion. T
The Tamron 18 – 270 F/3.5-6.3 Di II VC PZD not only covers everything from wide-angle for landscape to tele for close-up photography, but also offers light-macro capability at a maximum magnification ratio of 1:3,8 throughout the focal length range, to magnify the small things in life.
Ultrasonic motors are divided into two categories depending on how the energy that moves the drive is generated: traveling wave motors and standing wave motors. The autofocus of the new 18-270mm VC PZD is built on the principle of a standing wave, whereas the drive mechanism of the new 70-300mm VC USD functions on a travelling wave basis.
In the Tamron PZD standing wave principle a high-frequency voltage is applied to the piezoelectric element. It is thereby put into a standing wave motion.
A metal tip on the piezoceramic element is elliptically rotated by the rotary movement of the element and in turn drives the rotor by means of friction. Standing wave ultrasonic motors have the distinct advantage of being more compact than their traveling wave counterparts. This allows for a more compact lens construction.
The Tamron Piezo Drive distinguishes with its precise, fast and silent autofocus.
New VC Construction with moving Coils
Whereas the original VC mechanism worked on the basis of a moving magnet system with relatively heavy magnets attached to the VC lens element with diverging electromagnetic coils, the new system is the exact opposite. The compact and light-weight coil system is attached to the VC lens element. It assures an improved impulse-response (reaction time to resulting vibrations), and also plays a considerable role in the lenses overall weight and size reduction.