The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 20-40mm F2.8 VXD and the Sony E 10-20mm F4 PZ 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. Tamron 20-40mm F2.8 VXD 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 20-40mm F2.8 VXD also has a larger diameter of 74mm compared to the Sony E 10-20mm F4 PZ G's 70mm diameter.
Below you can find a scaled side-by-side image of Tamron 20-40mm F2.8 VXD and Sony E 10-20mm F4 PZ G to get a better idea of how their sizes compare in real life.
Comparison image of the Tamron 20-40mm F2.8 VXD and the Sony E 10-20mm F4 PZ G Size and Weight 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, 51% (187g) lighter than the Tamron 20-40mm F2.8 VXD's weight of 365g.
Below you can find the dimension and weight table of the Wideangle Zoom Lenses in Sony E Mount for size comparison purposes.
Wideangle Lenses in Sony E Mount for Size Comparison
Filter Threads
The Tamron 20-40mm F2.8 VXD has a filter size of 67mm whereas the Sony E 10-20mm F4 PZ G 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 20-40mm F2.8 VXD:
And these are the 62mm filters that we recommend for the Sony E 10-20mm F4 PZ G:
Lens Mounts
Both the Tamron 20-40mm F2.8 VXD and the Sony E 10-20mm F4 PZ G has the same Sony E lens mount . Some of the latest released cameras that are compatible with the Sony E lenses are Sony FX5 , Sony A7R VI and Sony A7 V .
Focal Range
Tamron 20-40mm F2.8 VXD has a focal range of 20-40mm and
2.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
30 - 60mm .
On the other hand, the 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.