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 18-300mm F3.5-6.3G ED VR 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. Nikon 18-300mm F3.5-6.3G ED VR is the longer of the two lenses at 99mm. The Sigma 18-200mm F3.5-6.3 DC OS HSM C with a length of 86mm, is 13mm shorter. Besides being longer, the Nikon 18-300mm F3.5-6.3G ED VR also has a larger diameter of 79mm 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. Sigma 18-200mm F3.5-6.3 DC OS HSM C weighs 430g, which means it is 120g (21%) lighter than the Nikon 18-300mm F3.5-6.3G ED VR which has a weight of 550g.
Filter Threads
The Sigma 18-200mm F3.5-6.3 DC OS HSM C has a filter size of 62mm whereas the Nikon 18-300mm F3.5-6.3G ED VR has a 67mm 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 67mm filters that we recommend for the Nikon 18-300mm F3.5-6.3G ED VR:
Lens Mounts
The Sigma 18-200mm F3.5-6.3 DC OS HSM C has the Pentax KAF3 lens mount whereas the Nikon 18-300mm F3.5-6.3G ED VR 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 18-300mm F3.5-6.3G ED VR has a focal range of 18-300mm and 16.7X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 27-450mm when used on a APS-C / DX format camera.
