| Sigma 18-200mm f/3.5-6.3 DC OS Specifications | |
| Frame Coverage | APS-C |
| Lens Construction (groups) | 13 |
| Lens Construction (elements) | 18 |
| No. of Diaphragm Blades | 7 |
| Minimum Aperture | 22 |
| Closest Focusing Distance | 0.45m (17.7") |
| Maximum Magnifcation | 0.26x |
| Filter Diameter | 72mm |
| Maximum Diameter x Length | 79mm x 100mm (3.1" x 3.9") |
| Weight | 610g (21.5oz) |
Reviews
Source
Popular Photography
If you want an optically stabilized superzoom, your choices are the Canon 28-300mm, the Nikon 18-200mm or this Sigma -- at least until Tamron's new lens hits the shelves. In the meantime, the Sigma, which comes in only three mounts -- Canon, Nikon, and Sigma -- saves you more than $1,000 over the Canon, and costs hundreds less than the Nikon.
Photodo.com
Sigma must be congratulated for being the only independent to offer in-lens stabilisation and in this case, one that really works. It is not really required at the short end of the range but does become very handy as the focal length increases. With commendable optical performance for its type, the lens is well worth consideration.
PhotoZone.de
The Sigma AF 18-200mm f/3.5-6.3 DC OS is an extremely versatile lens but performance-wise it is a bit of a mixed bag. The resolution characteristic varies significantly throughout its immense zoom range. Interestingly the extreme ends are actually the sweet spots of the lens whereas the 35mm setting is downright miserable at large apertures.
