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 14-150mm f3.5-5.8 III 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 118mm. The Tamron 14-150mm f3.5-5.8 III with a length of 80mm, is 38mm shorter. Besides being longer, the Tamron 28-75mm F2.8 Di III also has a larger diameter of 76mm compared to the Tamron 14-150mm f3.5-5.8 III's 64mm 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 14-150mm f3.5-5.8 III weighs 285g, 47% (255g) lighter than the Tamron 28-75mm F2.8 Di III's weight of 540g.
Filter Threads
The Tamron 28-75mm F2.8 Di III has a filter size of 67mm whereas the Tamron 14-150mm f3.5-5.8 III has a 52mm 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 52mm filters that we recommend for the Tamron 14-150mm f3.5-5.8 III:
Lens Mounts
The Tamron 28-75mm F2.8 Di III has the Sony E lens mount whereas the Tamron 14-150mm f3.5-5.8 III has the Micro Four Thirds 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 OM System OM-3 Astro, OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount.
Tamron 28-75mm F2.8 Di III is also available in the Sony E and Nikon Z 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 14-150mm f3.5-5.8 III has a focal range of 14-150mm and 10.7X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 28-300mm when used on a FourThirds format camera.
