The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 150-600mm F5-6.3 Di VC USD G2 and the Sony 70-300mm F4.5-5.6 G SSM II for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Tamron 150-600mm F5-6.3 Di VC USD G2 is the longer of the two lenses at 258mm. The Sony 70-300mm F4.5-5.6 G SSM II with a length of 136mm, is 122mm shorter. Besides being longer, the Tamron 150-600mm F5-6.3 Di VC USD G2 also has a larger diameter of 106mm compared to the Sony 70-300mm F4.5-5.6 G SSM II's 83mm diameter.
The weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Sony 70-300mm F4.5-5.6 G SSM II weighs 750g, 62% (1260g) lighter than the Tamron 150-600mm F5-6.3 Di VC USD G2's weight of 2010g.
Below you can find the dimension and weight table of the Telephoto Zoom Lenses in Sony Alpha Mount for size comparison purposes.
Telephoto Zoom Lenses in Sony Alpha Mount for Size Comparison
Lens Mounts
Both the Tamron 150-600mm F5-6.3 Di VC USD G2 and the Sony 70-300mm F4.5-5.6 G SSM II has the same Sony Alpha lens mount. Some of the latest released cameras that are compatible with the Sony Alpha lenses are Sony A99 II, Sony A68 and Sony A77 II.
Tamron 150-600mm F5-6.3 Di VC USD G2 is also available in Nikon F (FX) and Canon EF mounts.
Focal Range
Tamron 150-600mm F5-6.3 Di VC USD G2 has a focal range of 150-600mm and 4.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 225 - 900mm.
Sony 70-300mm F4.5-5.6 G SSM II has a focal range of 70-300mm 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 105 - 450mm.