A Quick Look At The Sigma 18 – 200mm Lens Review
The sigma 18 – 200mm lens is produced for digital SLRs that have cropped sensors. It is designed to be compatible with Pentax, Nikon, Sony Alpha and Cannon cameras.
When it is used on Canon DSLRs, you can expect a 35mm focal range of 29-320mm. On the other brands of DSLRs, the equivalent range is about 27-300mm. It is not designed for full frame SLRs. This sigma 18-200mm review will give you a few tips about this product.
The Sigma 18-200mm f/3.5-6.3 DC AF OS (Optical Stabilizer) is a complete 11.1x zoom lens. Its features include telephoto and wide angle capability. It can be used for a wide variety of photo sessions and it is adequate for the needs of most photographers. It is the ideal super-zoom for the inexpensive DSLR market.
Expectedly, the optical design of the Sigma 18-200 OS is complicated. It has 18 elements with thirteen groups which include a SLD glass element and 3 aspherical elements that combat aberrations. The versatility of the lens is improved by a 0.45m minimum focus distance. If you shoot moving objects frequently, you will appreciate the optical stabilization system which is designed to automatically switch to one axis operation when the camera is panning.
Another valuable feature of the sigma 18-200mm lens is the inner focusing system that stops the front of the lens from rotating. This makes it very appropriate for using petal shaped hoods and circular polarizing filters. It is also easy to use because the length of the lens remains the same when you are focusing. The zoom lock switch also removes the problem of zoom creep when traveling.
The versatility of the Sigma AF 18-200mm f/3.5-6.3 DC OS can be attributed to its 27-300m focal range equivalent. The 11.1x zoom range enables you to capture very good close-ups of far objects and wide landscape shots. Its adaptability has made it a favorite for a lot of photographers.
If you are on a limited budget, this product will really give you good value for your money. It is easy to recommend this product because it delivers far above the usual expectations of products in its category. It has a very versatile 11.1x zoom range that makes it convenient to use. It is small and light and can be easily carried from place to place. It is also polarizer friendly and it incorporates an internal focusing design. The sigma 18 – 200mm is a lens that you will always be glad that you bought.
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