The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron AF 18-250mm f3.5-6.3 II LD 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 AF 18-250mm f3.5-6.3 II LD with a length of 84mm, is 13mm 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 AF 18-250mm f3.5-6.3 II LD'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 AF 18-250mm f3.5-6.3 II LD weighs 430g, which means it is 135g (23%) lighter than the Nikon 18-200mm f3.5-5.6G ED VR II which has a weight of 565g.
Filter Threads
The Tamron AF 18-250mm f3.5-6.3 II LD has a filter size of 62mm 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 62mm filters that we recommend you to consider for the Tamron AF 18-250mm f3.5-6.3 II LD:
And these are the 72mm filters that we recommend for the Nikon 18-200mm f3.5-5.6G ED VR II:
Lens Mounts
Both the Tamron AF 18-250mm f3.5-6.3 II LD and the Nikon 18-200mm f3.5-5.6G ED VR II 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 AF 18-250mm f3.5-6.3 II LD is also available in the Canon EF , Sony Alpha and Pentax KAF mounts.
Focal Range
Tamron AF 18-250mm f3.5-6.3 II LD has a focal range of 18-250mm and
13.9X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
27-375mm when used on a APS-C / DX format camera.
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.
