The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 28-300mm f3.5-6.3 VC PZD and the Nikon 18-200mm f3.5-5.6G ED VR II 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 18-200mm f3.5-5.6G ED VR II is the longer of the two lenses at 97mm. The Tamron 28-300mm f3.5-6.3 VC PZD with a length of 96mm, is 1mm shorter. Besides being longer, the Nikon 18-200mm f3.5-5.6G ED VR II also has a larger diameter of 77mm compared to the Tamron 28-300mm f3.5-6.3 VC PZD's 74mm 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 28-300mm f3.5-6.3 VC PZD weighs 540g, which means it is 25g (4%) lighter than the Nikon 18-200mm f3.5-5.6G ED VR II which has a weight of 565g.
Filter Threads
The Tamron 28-300mm f3.5-6.3 VC PZD has a filter size of 67mm whereas the Nikon 18-200mm f3.5-5.6G ED VR II has a 72mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Tamron 28-300mm f3.5-6.3 VC PZD:
And these are the 72mm filters that we recommend for the Nikon 18-200mm f3.5-5.6G ED VR II:
Lens Mounts
The Tamron 28-300mm f3.5-6.3 VC PZD has the Nikon F (FX) lens mount whereas the Nikon 18-200mm f3.5-5.6G ED VR II has the Nikon F (DX) lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount and Nikon D3500, Nikon D7500 and Nikon D5600 for the Nikon F (DX) Mount.
Tamron 28-300mm f3.5-6.3 VC PZD is also available in the Canon EF and Sony Alpha mounts.
Focal Range
Tamron 28-300mm f3.5-6.3 VC PZD has a focal range of 28-300mm and
10.7X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
42 - 450mm.
On the other hand, the Nikon 18-200mm f3.5-5.6G ED VR II 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.