The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 35-150mm F2.8-4 Di VC OSD and the Tamron AF 28-75mm f2.8 XR LD 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 35-150mm F2.8-4 Di VC OSD is the longer of the two lenses at 127mm. The Tamron AF 28-75mm f2.8 XR LD with a length of 92mm, is 35mm shorter. Besides being longer, the Tamron 35-150mm F2.8-4 Di VC OSD also has a larger diameter of 84mm compared to the Tamron AF 28-75mm f2.8 XR LD's 73mm 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 28-75mm f2.8 XR LD weighs 510g, 35% (280g) lighter than the Tamron 35-150mm F2.8-4 Di VC OSD's weight of 790g.
Filter Threads
The Tamron 35-150mm F2.8-4 Di VC OSD has a filter size of 77mm whereas the Tamron AF 28-75mm f2.8 XR LD has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Tamron 35-150mm F2.8-4 Di VC OSD:
And these are the 67mm filters that we recommend for the Tamron AF 28-75mm f2.8 XR LD:
Lens Mounts
The Tamron 35-150mm F2.8-4 Di VC OSD has the Nikon F (FX) lens mount whereas the Tamron AF 28-75mm f2.8 XR LD has the Sony Alpha lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount and Sony A99 II, Sony A68 and Sony A77 II for the Sony Alpha Mount.
Tamron 35-150mm F2.8-4 Di VC OSD is also available in Canon EF mount.
Tamron AF 28-75mm f2.8 XR LD is also available in Canon EF , Nikon F (FX) and Pentax KAF mounts.
Focal Range
Tamron 35-150mm F2.8-4 Di VC OSD has a focal range of 35-150mm and
4.3X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
52.5 - 225mm.
On the other hand, the Tamron AF 28-75mm f2.8 XR LD 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.