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The acclaimed Tamron 18-270mm VC ultra zoom for APS-C format DSLRs has reached an astonishing new a higher level compactness, performance, and speed with the addition of PZD (Piezo Drive), an innovative ultrasonic autofocus motor based while on an advanced piezoelectric design. The actual result is a lens that’s considerably lighter, and noticeably shorter and slimmer (filter diameter: 62mm) than any previous lens in the class, and provides faster, quieter auto-focusing.
Signature features that made this amazingly versatile lens the entire world standard in the class have been retained. They add a 28-419mm equivalent (15X) zoom range, an improved, lightweight, compact Vibration Compensation (VC) system, macro focusing to 0.49m (19.3 inches) throughout, and, of course, superlative imaging performance.
Technical Specifications
Focal Length: 18-270mm
Format Size: APS-C Di-II
Maximum Aperture: F/3.5-6.3
Diagonal Angle of View: 75°33′ – 5°55′
Lens Construction: 16 elements/13 groups
MFD/Max. Mag. Ratio: 19.3″ / 1:3.8 (at f=270mm)
Filter Diameter: 62mm
Overall Length: 3.5″
Maximum Diameter: 2.9″
Weight: 15.9 oz.
Diaphragm Blades: 7
Standard Accessory: Hood
Piezo Drive (PZD) Ultrasonic Autofocus Motor
Ultrasonic motors are split up into two categories depending for the principle that generates the power to advance the drive: traveling wave motors and standing wave motors. Traveling wave motors range from the ring type ultrasonic motor used inside the recently launched 70-300mm F/4-5.6 VC USD too as other lenses, but this lens employs a newer technology, the PZD (Piezo Drive), which functions about the standing wave principle.
A standing wave ultrasonic motor utilizes high-frequency voltage to extend and turn the piezoelectric (piezoceramic) element, thus moving the entire element in a very standing wave movement. The metal tip could be the contact point with the element towards the rotor, and moves within an elliptic motion from your swiveling motion in the moving element, and the friction from this motion turns the rotor. Standing wave ultrasonic motors possess the distinct advantage for being less space-consuming than their traveling wave counterparts, and to the reason allow an even more compact SLR lens size.
PZD Technology Diagram
Di II
Lenses are made for exclusive use on digital cameras with smaller-size imagers and inherit all of the benefits of our own Di products. These lenses aren’t made for conventional cameras and digital camera models with image sensors larger than 24mm x 16mm.
15x Zoom Ratio
This lens covers an extremely broad variety of focal lengths, from an extra-wide 18mm length with a telephoto 270mm length (the 35mm equivalent of 28mm to 419mm). The resulting 15x zoom ratio may be the world’s largest, representing a broad cross area of Tamron high-power zoom design technologies. Plus, the vibration compensation works through the entire entire zoom range, giving the freedom to produce a wide selection of images. The lens lets users capture once-in-a-lifetime panoramic landscape images or close-up pictures of children smiling, all without getting too close towards the subject or changing lenses. Other details incorporate a macro magnification variety of 1:3.5, a minimum focusing distance of 19.3 inches, plus a 72mm filter diameter. The lens, which measures 3.1 inches in diameter and 3.9 inches long, has a six-year warranty.
18mm zoom – 270mm zoom
Vibration Compensation (VC)
Shake can ruin your photos, specially when taking telephoto shots or shooting in low light conditions.Simply flip the VC turn on and you will see the difference immediately.
VC delivers blur free – handheld images for incredible results
VC mechanism employs a three-coil system
Lens element compensates for vibration using 3-steel balls (making movement quiet & smooth)
Exceptional images at slower shutter speeds – reduces the necessity to get a tripod
Bring out contrast to motion & stillness
Eliminate the should shoot having a Flash
VC Off – VC On
Low Dispersion (LD) Glass for Greater Lens Sharpness
Add sharpness for a image with Low Dispersion (LD) glass lenses
Low dispersion (LD) glass elements in a lens help reduce chromatic aberration; the tendency of sunshine of various colors to arrive at different points of focus in the image plane. Chromatic aberration reduces the sharpness of an image, but glass with the extremely lowdispersion index, has less of a tendency to separate (defract) a ray of sunshine in to a rainbow of colors. This characteristic allows the lens designer to effectively compensate for chromatic aberration with the center of the field (on axis), a certain problem at long focal lengths (the telephoto end of the zoom range), and for lateral chromatic aberration (towards the edges with the field) that frequently occurs at short focal lengths (the wide-angle end in the zoom range.)
Internal Focusing (IF) System
Internal focusing provides numerous practical good things about photographers including a non-rotating front filter ring that facilitates the positioning of polarizing and graduated filters, plus much more predictable handling for the reason that lens length does not change during focusing. Even more important, Tamron’s Internal Focusing (IF) system provides a significantly closer minimum focusing distance (MFD) throughout its entire focusing range. In addition, IF improves optical performance by minimizing illumination loss with the corners with the image field, and helps to suppress other aberrations that become more troublesome at different focusing positions.
Zoom Lock (ZL)
Another original Tamron mechanical engineering concept could be the Zoom Lock (ZL), a fairly easy convenience feature that prevents undesired extension from the lens barrel when carrying the camera/lens unit on a neck strap.
Anomalous Dispersion (AD) for Better Color Correction
Anomalous Dispersion
Anomalous dispersion (AD) glass is a special kind of optical glass which is employed to achieve more precise power over chromatic aberrations, thereby enhancing overall imaging performance. Glass on this type has an abnormally large partial dispersion ratio (amount of diffraction) for light of specific wavelength ranges (colors) from the visible spectrum. By combining AD glass having these special characteristics with elements made of normal glass having different dispersion characteristics, it really is possible to manage the dispersion factors of the specific wavelength. This enhanced level of control leads to much lower levels of on-axis (central) chromatic aberration for telephoto lenses (or zooms used at tele-photo settings) along with a significant reduction of lateral (peripheral) chromatic aber-ration for wide-angle lenses (or zooms used at wide-angle settings.)
Aspherical Lens Elements (ASL)
Tamron uses several hybrid Aspherical lens elements in lots of lenses
Achieve the greatest in image quality with Aspherical Lens Elements (ASL)
bearing the Aspherical designation. These innovative optics allow us to realize the ultimate in image quality, and with the same time produce lenses that provide remarkable zoom ranges in extraordinarily compact packages. By perfecting theses cutting-edge advances for series production, Tamron has advanced the state of optical design, and virtually eliminated spherical aberration and image distortion from the high-power-zoom series.Through the effective using Hybrid Aspherical Technology, one lens element can make host to multiple elements without compromising performance. This is exactly what allows us to produce remarkably compact long-range lenses that deliver a uniformly high a higher level image quality whatsoever focal lengths and apertures.
The World’s Lightest, Smallest 15x Zoom*, with Tamron’s First PZD (Piezo Drive) The acclaimed Tamron 18-270mm VC ultra zoom for APS-C format DSLRs has reached an astonishing new level of compactness, performance, and speed with all the addition of PZD (Piezo Drive), an innovative ultrasonic autofocus motor based by using an advanced piezoelectric design. The end result is often a lens that’s considerably lighter, and noticeably shorter and slimmer (filter diameter: 62mm) than any previous lens in its class, and supplies faster, quieter auto-focusing. Signature features that made this amazingly versatile lens the entire world standard rolling around in its class happen to be retained. They incorporate a 28-419mm equivalent (15X) zoom range, an improved, lightweight, compact Vibration Compensation (VC) system, macro focusing to 0.49m (19.3 inches) throughout, and, of course, superlative imaging performance. *For SLR camera high-zoom-ratio lenses with 15x magnification capability. Current as of December 2010. (Source: Tamron).
Extremely fast Piezo drive focusing motor
Vibration Compensation for ultra sharp images
Compact design
long zoom range for versatility
Designed for APS-C sized sensors
opteka high definition 0 20x af fisheye lens for select canon digital cameras Used Canon Lenses
