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 Tamron 18-200mm f3.5-6.3 III VC 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. Tamron 18-200mm f3.5-6.3 III VC 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. On the other hand, the Tamron AF 18-250mm f3.5-6.3 II LD has a larger diameter of 74mm compared to the Tamron 18-200mm f3.5-6.3 III VC'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. Tamron AF 18-250mm f3.5-6.3 II LD weighs 430g, which means it is 30g (6%) lighter than the Tamron 18-200mm f3.5-6.3 III VC which has a weight of 460g.
Filter Threads
Both the Tamron AF 18-250mm f3.5-6.3 II LD and the Tamron 18-200mm f3.5-6.3 III VC 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 18-250mm f3.5-6.3 II LD has the Nikon F (DX) lens mount whereas the Tamron 18-200mm f3.5-6.3 III VC has the Sony E lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon D3500, Nikon D7500 and Nikon D5600 for the Nikon F (DX) Mount and Sony ZV-E10 II, Sony A6700 and Sony FX30 for the Sony E Mount.
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 Tamron 18-200mm f3.5-6.3 III VC 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.
