By revolutionizing the optical and structural design of the Sigma 18-250mm F3.5-6.3 DC OS HSM,this new lens achieves a compact size and a minimum focusing distance of 35cm. New material,Thermally Stable Composite (TSC) maintains its structure and has little contractility especially invarying temperatures, is incorporated into the lens barrel. It is convenient when you wish to keepyour equipment to a minimum and yet still be prepared for all opportunities and situations, such astravels. A wide range of photography is possible in one lens Covering wide angle 18mm to telephoto 250mm, this versatile lens designed exclusively for digital SLRcameras, is suitable for all-purpose photography including landscape, sport, and macro photography. It isconvenient when you wish to keep your equipment to a minimum and yet still be prepared for allopportunities and situations, such as travels. Excellent for macro photography Close-up capability is improved with the minimum focusing distance of 35cm throughout the entire zoomrange, and maximum magnification ratio of 1:2.9. In APS-C size equivalent, macro photography withapproximately 1:2 magnification ratio is possible. In addition, with this lens, the size and framing ofsubjects can be adjusted by rotating a zoom ring, making macro photography easier than using fixed focalmacro lens. For further convenience, the maximum magnification ratio at each focusing distance appearson the side of the lens barrel. Revolutionizing the design foundation results in compact size Optimization of the power arrangement by such as incorporating double-sided aspherical lenses, andreexamination of design, the filter diameter size is reduced. This compact size lens has the approximately13x high zoom ratio with the filter size of diameter 62mm, and dimensions of diameter 73.5mm x Length 88.6mm. It ensures portability and overall ease of use, making it perfect for travel and leisurephotography. New material TSC (Thermally Stable Comp...