Independent lens maker Sigma has announced a new DSLR zoom lens designed for travellers and backpackers, or anyone who wants an all-purpose zoom lens that's both light and small.
The Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM is different because it's been manufactured using a special polycarbonate material called Thermally Stable Composite (TSC).
Stable and quiet
Sigma's optical stabilisation (OS) technology is also included, which should mean sharper handheld shots at lower shutter speeds. The magnification ratio of the macro function is 1:2.9 and all 13 elements that make up the lens are multi-coated to reduce flare and ghosting.
For quieter and faster autofocusing, Sigma has incorporated its Hyper Sonic Motor (HSM) mechanism, which makes it ideal for newer budget DSLRs from Nikon that don't have focus motors built into the camera body. There's also a rounded, seven-blade diaphragm that should produce images with a softer and more pleasing bokeh.
The new lens will be available in Sigma, Sony, Nikon, Canon and Pentax mounts, but the first to market will be the Canon version, which is expected to launch in July 2012. Pricing and the availability for other mounts have yet to be announced.
Sample images available
If the idea of a lightweight go-anywhere lens excites you then you can take a sneek peek at some real-life samples of Sigma's new 18-250mm F3.5-6.3 DC Macro OS HSM lens. Sigma has released 16 image files taken with the new lightweight lens. All the images are available to pixel peep at full resolution and were shot using a Sigma SD 15. Click here to view the images.