The leading brands in photography equipment constantly improve the quality of their products. However, not everyone can afford to upgrade their equipment but thankfully there are third party brands which do not cease to develop new products as well. Sigma, a known third party producer of quality camera lenses has recently announced a new lens which is made out of a unique metal-like material which makes it lighter than ever.
The Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM is the first lens made using Thermally Stable Composite (TSC). The new material makes lenses smaller and lighter. That sounds good for photographers who use very heavy camera bodies. The traditional lenses were made out of engineering plastic polycarbonate which is mixed with 20-30% glass. The new material not only diminishes weight of lenses but also maximizes its resistance to impact.
On the other hand, you need to consider the lenses have high dependency on temperature so it might probably best not to prolong its usage under extreme weather conditions. Nevertheless, the new material has solved this issue and is more stable in various temperatures.
The lenses for Canon and Nikon cameras will be out later this month. While lenses compatible with Sony and Pentax units shall be announced shortly after. The expected price of the new lens is £499.99.