The AF-S Nikkor 18-200mm f/3.5-5.6 sits between Tamron’s 18-200mm f/3.5-6.3 and the Tamron 18-250mm f/5.6-6.3.

The AF-S Nikkor 18-200mm f/3.5-5.6 sits between Tamron's 18-200mm f/3.5-6.3 and the Tamron 18-250mm f/5.6-6.3.

The AF-S Nikkor 18-200mm f/3.5-5.6 sits between Tamron’s 18-200mm f/3.5-6.3 and the Tamron 18-250mm f/5.6-6.3.