The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 18-200mm F3.5-6.3 Di II VC and the Sigma 18-200mm f3.5-6.3 II DC OS HSM for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is a crucial factor to consider when comparing two lenses. Tamron 18-200mm F3.5-6.3 Di II VC is the longer of the two lenses at 97mm. The Sigma 18-200mm f3.5-6.3 II DC OS HSM with a length of 88mm, is 9mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 75mm.
The weight of a lens is equally significant as its external dimensions, particularly if you intend to handhold your camera and lens combination for extended periods. Tamron 18-200mm F3.5-6.3 Di II VC weighs 400g, which means it is 90g (18%) lighter than the Sigma 18-200mm f3.5-6.3 II DC OS HSM which has a weight of 490g.
Below you can find the dimension and weight table of the SuperZoom Lenses in Nikon F (DX) Mount for size comparison purposes.
Superzoom Lenses in Nikon F (DX) Mount for Size Comparison
Filter Threads
Both the Tamron 18-200mm F3.5-6.3 Di II VC and the Sigma 18-200mm f3.5-6.3 II DC OS HSM have the same Filter thread size of 62mm.
Below are links to the 62mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Tamron 18-200mm F3.5-6.3 Di II VC and the Sigma 18-200mm f3.5-6.3 II DC OS HSM has the same Nikon F (DX) lens mount. Some of the latest released cameras that are compatible with the Nikon F (DX) lenses are Nikon D3500, Nikon D7500 and Nikon D5600.
Tamron 18-200mm F3.5-6.3 Di II VC is also available in the Canon EF and Sony Alpha mounts.
Sigma 18-200mm f3.5-6.3 II DC OS HSM is also available in Canon EF and Sigma SA mounts.
Focal Range
Both lenses have the same focal range of
18-200mm but while Tamron 18-200mm F3.5-6.3 Di II VC has the fastest aperture of
F3.5 - F5.6, the Sigma 18-200mm f3.5-6.3 II DC OS HSM's widest aperture value is
F3.5 - F6.3.
