The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron AF 18-200mm f3.5-6.3 XR II LD and the Sigma 18-200mm F3.5-6.3 DC OS HSM C 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. Sigma 18-200mm F3.5-6.3 DC OS HSM C is the longer of the two lenses at 86mm. The Tamron AF 18-200mm f3.5-6.3 XR II LD with a length of 84mm, is 2mm shorter. On the other hand, the Tamron AF 18-200mm f3.5-6.3 XR II LD has a larger diameter of 74mm compared to the Sigma 18-200mm F3.5-6.3 DC OS HSM C's 71mm diameter.
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 AF 18-200mm f3.5-6.3 XR II LD weighs 398g, which means it is 32g (7%) lighter than the Sigma 18-200mm F3.5-6.3 DC OS HSM C which has a weight of 430g.
Filter Threads
Both the Tamron AF 18-200mm f3.5-6.3 XR II LD and the Sigma 18-200mm F3.5-6.3 DC OS HSM C 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
The Tamron AF 18-200mm f3.5-6.3 XR II LD has the Pentax KAF lens mount whereas the Sigma 18-200mm F3.5-6.3 DC OS HSM C has the Pentax KAF3 lens mount. Some of the latest released cameras that are compatible with these mounts are Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF Mount and , and for the Pentax KAF3 Mount.
Tamron AF 18-200mm f3.5-6.3 XR II LD is also available in the Canon EF , Nikon F (DX) and Sony Alpha mounts.
Sigma 18-200mm F3.5-6.3 DC OS HSM C is also available in Canon EF , Nikon F (DX), Sony Alpha and Sigma SA mounts.
Focal Range
Both lenses have the same focal range of
18-200mm and the fastest aperture of
F3.5 - F6.3.
