The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony E 10-20mm F4 PZ G and the Tamron 11-20mm F2.8 Di III-A 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 11-20mm F2.8 Di III-A is the longer of the two lenses at 86mm. The Sony E 10-20mm F4 PZ G with a length of 55mm, is 31mm shorter. Besides being longer, the Tamron 11-20mm F2.8 Di III-A also has a larger diameter of 73mm compared to the Sony E 10-20mm F4 PZ G's 70mm diameter.
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Below you can find a scaled side-by-side image of Sony E 10-20mm F4 PZ G and Tamron 11-20mm F2.8 Di III-A to get a better idea of how their sizes compare in real life.
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. Sony E 10-20mm F4 PZ G weighs 178g, which means it is 157g (46%) lighter than the Tamron 11-20mm F2.8 Di III-A which has a weight of 335g.
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Filter Threads
The Sony E 10-20mm F4 PZ G has a filter size of 62mm whereas the Tamron 11-20mm F2.8 Di III-A 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 62mm filters that we recommend you to consider for the Sony E 10-20mm F4 PZ G:
And these are the 67mm filters that we recommend for the Tamron 11-20mm F2.8 Di III-A:
Lens Mounts
Both the Sony E 10-20mm F4 PZ G and the Tamron 11-20mm F2.8 Di III-A has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony A6700, Sony FX30 and Sony ZV-E10.
Tamron 11-20mm F2.8 Di III-A is also available in Fujifilm X mount.
Focal Range
Sony E 10-20mm F4 PZ G has a focal range of 10-20mm and
2.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
15-30mm when used on a APS-C / DX format camera.
On the other hand, the Tamron 11-20mm F2.8 Di III-A has a focal range of 11-20mm and 1.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 16.5-30mm when used on a APS-C / DX format camera.