The new AF18-200mm F/3.5-6.3 XR Di-II LD Aspherical (IF) MACRO is a high power zoom lens for exclusive use with digital (APS-C size) SLR cameras that inherits the product concept of the existing AF28-300mm F/3.5-6.3 XR zoom lens. Even two years after its introduction, the current AF28-300mm is still a much loved and highly evaluated by photographers around the world as a representative model of high power zoom lenses.
With the market influx of digital SLR cameras in recent years, the use of high power zoom lenses has become increasingly popular since high power zooms provide the convenience of handling many photographic scenes and the capability of shooting ultra telephoto shots without changing lenses. The popularity of this focal length led Tamron to initiate the development of new zoom lenses to further meet the needs of digital SLR photographers. The result is the successful development of a new zoom lens exclusively for use on digital SLR cameras. The wide to ultra tele focal range of this lens will allow digital SLR camera owners to enjoy digital photography with comfort and convenience.
Dedicated for Digital SLR CamerasBy incorporating an optical design for exclusive use with digital (APS-C) SLR cameras, this high power zoom lens provides the focal length equivalent to Tamron's 28-300mm (when converted to a 35mm format). Therefore, you can meet almost all photographic opportunities with this single zoom lens without changing lenses. When paired with the SP AF11-18mm zoom lens, simultaneously introduced by Tamron at Photokina, you can enjoy thoroughly digital SLR photography with the combined focal length coverage of 17-300mm.Optical System Uses Special Glass and is Optimized for Digital SLR Characteristics in order to Enhance Optical Quality in a Compact DesignThe new AF18-200mm high power zoom lens from Tamron features an entirely new optical design using XR (Extra Refractive Index) glass in an innovative way in order to optimize the overall distribution of optical power throughout the entire zoom range. This design reduces various aberrations to the absolute minimum and achieves remarkable downsizing at the same time. In addition, three hybrid aspherical lens elements and two LD (Low Dispersion) glass elements are used to accomplish effective compensation of on-axis and lateral chromatic aberrations, a critical factor to enhance the optical quality in digital photography. As a result, the lens provides outstanding optical quality in a multi-purpose zoom lens. Optical Design Dedicated to Digital SLR Photography by Optimizing the Angles of Incidences of Light Rays Reaching the ImagerThe zoom lens uses a new optical system designed to confine the changing angles of incidences of light rays reaching the imager within a certain scope over the entire image field from the center to the periphery, by considering the effects of variances due to zooming. Enhanced Peripheral Illumination Peripheral light fall-off is minimized when compared with that of conventional lenses for film cameras so that images are uniformly bright from the center to the periphery. Outstanding ResolutionSince the lens is designed exclusively for digital SLR photography, it provides high image quality in terms of resolution, contrast and flatness of image field.Internal Surface Coating to Reduce Ghosting and Flare Ghosting and flare caused by aberrations are annoying factors in digital SLR photography, so Tamron has adopted various countermeasures against the problem including the employment of "Internal Surface Coatings" (i.e., multiple-layer coatings on cemented surfaces of plural elements) and new multiple-layer coating technology on ordinary elements in order to minimize reflections that occur when light enters through the front element and to reduce image degrading effects caused by the imagers themselves.Revolutionary MFD - 0.45m over the Entire Zoom Range for 1:3.7 Macro Capability The new 18-200mm zoom lens realizes an MFD (Minimum Focus Distance) of 0.45m over the entire zoom range, which is better than that of the conventional 28-300mm zoom lens, by the employment of a new optical/mechanical design configuration. Since the maximum magnification ratio at f=200mm is 1:3.7, you can enjoy close-up photography easily and conveniently. High Power, Yet Compact and Lightweight Thanks to New Mechanical Artifices Complicated mechanisms are built in the compact body thanks to new mechanical artifices. The lens is a multi-purpose zoom lens, yet excellent portability and ease of use are assured. A number of invisible engineering innovations required to downsize the lens, produce high precision parts and increase durability are incorporated in the new AF18-200mm F/3.5-6.3 XR Di-II Aspherical (IF) MACRO since manufacturing this type of zoom lens with such complicated mechanisms inside was almost impossible with conventional manufacturing technology.Zoom Lock Mechanism Incorporated The Zoom Lock prevents unwanted barrel extension when carrying the lens/camera combination. Flower-shaped Lens Hood A glare-reducing flower-shaped lens hood is included as a standard accessory. The special hood provides optimum shading of superfluous light rays that enter from the rectangular frame outside the image field. New External Design Conveys "High Performance, High Precision Image" as One of the New Di-II Series Improvements have been made to the external design by adding a gold-colored band between the focus and zoom rings to enhance the appearance and make it stand out as a Di-II lens. The rubber patterns of the zoom and focus control rings have been improved at the same time to compliment the digital camera design style and to provide better handling.
(based on 7 reviews)
of respondents would recommend this to a friend.
Reviewed by 7 customers
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Can't beat it for the price
By K Cave
from Whidbey Is. Washington
About Me Semi-pro Photographer
Comments about Tamron 18-200mm F/3.5-6.3 AF DI-II LD IF Lens For Pentax, With 6-Year USA Warranty:
Wow! Back to one lens that does almost everytning I need. Important due to weight restrictions that the airlines have implemented over the years.A little slow in poor light, but that can be overcome if you know how to use your camera.
Bottom Line Yes, I would recommend this to a friend
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Good bang for the buck
About Me Photo Enthusiast
Very useful zoom range. I would even sacrifice the zoom end more to get even wider angle... my perfect range would be 24 to 200 in 35mm equivalent, not available in current offerings :-(
(1 of 1 customers found this review helpful)
Nice all purpose lens
By Old Dog
from Huntsville Al
I purchased this lens for those occasions when I didn't want to carry my bag of lenses and knowing the range will be wide angle to long focal length.The lens have a nice feel and not too heavy for its size. It does have a zoom lock nicely positioned for the right index finger which comes in handy while carrying around.Nice plastic hood, goes on and off easily, plastic can be your friend when you bump the lens hood, plastic gives/metal hoods don't give, "ouch". Now about Performance, it does perform well with good light or outdoors with good lighting. But having a range from 18-200mm there is a sacrifice if the lighting is not that good. In low light the focus is slow or sometimes can't focus at all, image quality suffers as well, but using a flash is ok. The lens is surprisingly good at close up, I have gotten some very good close up shots with this lens.I recommend this lens for the casual photographer who doesn't like changing lenses and just want some decent images without a lot of fuss. For the price of this lens with rebate you can't go wrong giving it a try. It can not replace my bag of Takumars but it does have a home in my bag.
A very nice lens
from Santa Clara, Ca.
This lens will become my constant companion for most photography. It's exactly what I wanted in a zoom lens for landscapes and people photography.
Good lens, great versatility
Used it for trip to Alaska with Pentax K7. Lightweight combo for lots of all day sightseeing. Good optics, good price. Nothing compares to prime lens for optics, but it was great compromise for carrying a camera around all day, very versitile 18-200 range. Used it for my grandson's baseball game. Got really good action shots too. I would buy it again.
Great all-around lens.
from Baton Rouge, LA
Very versatile lens. Great for close ups and for zooms without having to change lens all the time. Love it. My go-to lens.
from SYRACUSE, NY
About Me Casual Photographer
JUST STARTED USING LENS... SO FAR EXCELLENT RESULTS