The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 18-300mm F3.5-6.3 Di and the Sony FE PZ 28-135mm F4 G 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. Sony FE PZ 28-135mm F4 G is the longer of the two lenses at 163mm. The Tamron 18-300mm F3.5-6.3 Di with a length of 126mm, is 37mm shorter. Besides being longer, the Sony FE PZ 28-135mm F4 G also has a larger diameter of 105mm compared to the Tamron 18-300mm F3.5-6.3 Di's 76mm 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 18-300mm F3.5-6.3 Di weighs 620g, which means it is 595g (48%) lighter than the Sony FE PZ 28-135mm F4 G which has a weight of 1215g.
Filter Threads
The Tamron 18-300mm F3.5-6.3 Di has a filter size of 67mm whereas the Sony FE PZ 28-135mm F4 G has a 95mm 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 18-300mm F3.5-6.3 Di:
And these are the 95mm filters that we recommend for the Sony FE PZ 28-135mm F4 G:
Lens Mounts
Both the Tamron 18-300mm F3.5-6.3 Di and the Sony FE PZ 28-135mm F4 G has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony ZV-E10 II, Sony A6700 and Sony FX30.
Tamron 18-300mm F3.5-6.3 Di is also available in the Fujifilm X mount.
Focal Range
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.
On the other hand, the Sony FE PZ 28-135mm F4 G has a focal range of 28-135mm and 4.8X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 42 - 202.5mm.