The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 28-75mm F2.8 Di III and the Tamron AF 28-200mm f3.8-5.6 XR 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 28-75mm F2.8 Di III is the longer of the two lenses at 117mm. The Tamron AF 28-200mm f3.8-5.6 XR with a length of 75mm, is 42mm shorter. Besides being longer, the Tamron 28-75mm F2.8 Di III also has a larger diameter of 73mm compared to the Tamron AF 28-200mm f3.8-5.6 XR's 71mm 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 28-200mm f3.8-5.6 XR weighs 354g, 35% (196g) lighter than the Tamron 28-75mm F2.8 Di III's weight of 550g.
Filter Threads
The Tamron 28-75mm F2.8 Di III has a filter size of 67mm whereas the Tamron AF 28-200mm f3.8-5.6 XR has a 62mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Tamron 28-75mm F2.8 Di III:
And these are the 62mm filters that we recommend for the Tamron AF 28-200mm f3.8-5.6 XR:
Lens Mounts
The Tamron 28-75mm F2.8 Di III has the Sony E lens mount whereas the Tamron AF 28-200mm f3.8-5.6 XR has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Sony FX5, Sony A7R VI and Sony A7 V for the Sony E Mount and Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Tamron 28-75mm F2.8 Di III is also available in the Sony E and Nikon Z mounts.
Tamron AF 28-200mm f3.8-5.6 XR is also available in Nikon F (FX) , Sony Alpha and Pentax KAF mounts.
Focal Range
Tamron 28-75mm F2.8 Di III has a focal range of 28-75mm and
2.7X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
42 - 112.5mm.
On the other hand, the Tamron AF 28-200mm f3.8-5.6 XR has a focal range of 28-200mm and 7.1X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 44.8 - 320mm.
