The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 25-200mm f2.8-5.6 Di and the Tamron 18-300mm F3.5-6.3 Di 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 18-300mm F3.5-6.3 Di is the longer of the two lenses at 126mm. The Tamron 25-200mm f2.8-5.6 Di with a length of 122mm, is 4mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 76mm.
Below you can find a scaled side-by-side image of Tamron 25-200mm f2.8-5.6 Di and Tamron 18-300mm F3.5-6.3 Di to get a better idea of how their sizes compare in real life.
Comparison image of the Tamron 25-200mm f2.8-5.6 Di and the Tamron 18-300mm F3.5-6.3 Di Size and Weight 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 25-200mm f2.8-5.6 Di weighs 575g, which means it is 45g (7%) lighter than the Tamron 18-300mm F3.5-6.3 Di which has a weight of 620g.
Filter Threads
Both the Tamron 25-200mm f2.8-5.6 Di and the Tamron 18-300mm F3.5-6.3 Di have the same Filter thread size of 67mm .
Below are links to the 67mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Tamron 25-200mm f2.8-5.6 Di and the Tamron 18-300mm F3.5-6.3 Di has the same Sony E lens mount . Some of the latest released cameras that are compatible with the Sony E lenses are Sony FX5 , Sony A7R VI and Sony A7 V .
Fujifilm X mount.
Focal Range
Tamron 25-200mm f2.8-5.6 Di has a focal range of 25-200mm and
8.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
37.5 - 300mm .
On the other hand, the Tamron 18-300mm F3.5-6.3 Di has a focal range of 18-300mm and 16.7X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 27-450mm when used on a APS-C / DX format camera.
