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Wednesday, September 16, 2009

Tamron AF 55-200mm F/4.0-5.6 Di-II LD Macro Lens for Canon Digital SLR Cameras

The Tamron AF55-200mm f4-5.6 Di II Macro LD (Model A15) is a tele-zoom lens designed exclusively for digital SLR cameras with smaller-size image sensors at an affordable price. Di (Digitally integrated)-II lenses are designed for exclusive use on digital cameras with smaller-size imagers. This lens is not designed for use with 35mm film cameras or digital SLR cameras with image sensors larger than 24mm x 16mm.
For photographers who bought their digital SLR camera in a kit with a standard zoom lens but are dissatisfied with the telephoto capability of the standard lens, the AF55-200mm f4-5.6 Di II LD Macro offers in a second lens a desirable telephoto range at an affordable price. The tele-zoom from Tamron will allow these photographers to enjoy the telephoto capabilities that yield dynamic images in many photographic situations including sporting events, large wildlife, scenery and portraiture.

Technical Details :
* Telezoom lens designed exclusively for Canon Digital SLR cameras with smaller-size imagers.
* Nine-blade diaphragm construction for natural out-of-focus effect.
* 37.4-inch minimum focusing distance for 3.5x macro capability over entire zoom range.
* Low-dispersion lens elements reduces chromatic aberation for sharper images.
* Lightwight and compact design weighing a mere 10.4-ounces.



- Popular-type Tele-zoom for Exclusive Use on Digital SLR Cameras : This is a telephoto zoom for exclusive use on digital SLR cameras that covers the focal length range equivalent to 85-310mm when converted to a 35mm format.
- Lightweight and Compact Design Thanks to Optical System for Exclusive Use on Digital Cameras : Since the optical system is designed for exclusive use on digital cameras, the image circle is smaller, resulting in a compact package measuring 3.3 inches, accepting a 52mm standard filter and weighing a mere 10.4 ounces.
- Revolutionary Minimum Focus Distance of 37.4 inches for 1:3.5 Macro Capability over the Entire Zoom Range : The 55-200mm zoom lens realizes an MFD (Minimum Focus Distance) of 37.4 inches over the entire zoom range, the top level of the closest focusing distance among tele-zoom lenses.
- Nine-blade Diaphragm Construction for Natural Out-of-focus Effect : Since the lens employs a nine-blade almost circular diaphragm construction, it provides naturally blurred background effects when a natural out-of-focus effect is desired.
- Optical System Uses Special Glass and is Optimized for Digital SLR Characteristics in order to Enhance Optical Quality in a Compact Design.
- Optical Design Dedicated to Digital SLR Photography by Optimizing the Angles of Incidence of Light Rays Reaching the Image Sensor.
- Enhanced Peripheral Illumination : Peripheral light fall-off is minimized when compared with that of conventional lenses for film cameras, so images are uniformly bright from the center to the periphery.
- Outstanding Resolution : Since the lens is designed exclusively for digital SLR photography, it provides high image quality resolution, contrast and flatness of image field.
- Internal Surface Coating to Reduce Ghosting and Flare.
- New External Design on the New Di II Series Conveys "High Performance, High Precision Image".
- Super Hybrid Mount for High Durability and Lightweight Design.

Customer Feedback :
This lens is designed specifically for digital cameras. (Digital cameras are different from film cameras in several respects). For example, a digital camera uses what amounts to a big chip to gather light, the surface of the chip is far more reflective than film. This means bright light can hit the chip and some of it bounce back into the lens. HOWEVER, you cannot use this lens with a film camera, or you will get dark fading around the edges of the photo.
Also, this lens is designed specifically for cameras with a CMOS or CCD chip no larger than 15.5 to 23.2mm

Tamron AF 55-200mm F/4.0-5.6 Di-II LD Macro Lens for Canon Digital SLR Cameras

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