Like any lens manufacturer, different Tamron lenses are designed with different levels of weather resistance. The Tamron lenses in this buying guide typically feature some level of protection from the elements, but it varies from lens to lens. A lens that is listed as splash-resistant or moisture-resistant will offer less protection against a lens that is weather-sealed. Higher-end lenses like the Tamron 150-600 G2 are more likely to offer full-weather sealing.