The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 18-200mm F3.5-6.3 DC OS HSM C and the Nikon 55-200mm f4-5.6G ED 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 Nikon 55-200mm f4-5.6G ED with a length of 79mm, is 7mm shorter. Besides being longer, the Sigma 18-200mm F3.5-6.3 DC OS HSM C also has a larger diameter of 71mm compared to the Nikon 55-200mm f4-5.6G ED's 68mm 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. Nikon 55-200mm f4-5.6G ED weighs 255g, 40% (175g) lighter than the Sigma 18-200mm F3.5-6.3 DC OS HSM C's weight of 430g.
Filter Threads
The Sigma 18-200mm F3.5-6.3 DC OS HSM C has a filter size of 62mm whereas the Nikon 55-200mm f4-5.6G ED has a 52mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 62mm filters that we recommend you to consider for the Sigma 18-200mm F3.5-6.3 DC OS HSM C:
And these are the 52mm filters that we recommend for the Nikon 55-200mm f4-5.6G ED:
Lens Mounts
The Sigma 18-200mm F3.5-6.3 DC OS HSM C has the Pentax KAF3 lens mount whereas the Nikon 55-200mm f4-5.6G ED has the Nikon F (DX) lens mount. Some of the latest released cameras that are compatible with these mounts are , and for the Pentax KAF3 Mount and Nikon D3500, Nikon D7500 and Nikon D5600 for the Nikon F (DX) Mount.
Sigma 18-200mm F3.5-6.3 DC OS HSM C is also available in the Canon EF , Nikon F (DX), Sony Alpha and Sigma SA mounts.
Focal Range
Sigma 18-200mm F3.5-6.3 DC OS HSM C has a focal range of 18-200mm and
11.1X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
27-300mm when used on a APS-C / DX format camera.
On the other hand, the Nikon 55-200mm f4-5.6G ED has a focal range of 55-200mm and 3.6X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 82.5-300mm when used on a APS-C / DX format camera.
