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 VC and the Tamron 70-300mm f4-5.6 VC USD 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 150-600mm f5-6.3 VC is the longer of the two lenses at 258mm. The Tamron 70-300mm f4-5.6 VC USD with a length of 143mm, is 115mm shorter. Besides being longer, the Tamron 150-600mm f5-6.3 VC also has a larger diameter of 106mm compared to the Tamron 70-300mm f4-5.6 VC USD's 82mm 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 70-300mm f4-5.6 VC USD weighs 765g, 60% (1186g) lighter than the Tamron 150-600mm f5-6.3 VC's weight of 1951g.
Filter Threads
The Tamron 150-600mm f5-6.3 VC has a filter size of 95mm whereas the Tamron 70-300mm f4-5.6 VC USD 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 95mm filters that we recommend you to consider for the Tamron 150-600mm f5-6.3 VC:
And these are the 62mm filters that we recommend for the Tamron 70-300mm f4-5.6 VC USD:
Lens Mounts
Both the Tamron 150-600mm f5-6.3 VC and the Tamron 70-300mm f4-5.6 VC USD has the same Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with the Nikon F (FX) lenses are Nikon D6, Nikon D780 and Nikon D3500.
Tamron 150-600mm f5-6.3 VC is also available in Canon EF and Sony Alpha mounts.
Tamron 70-300mm f4-5.6 VC USD is also available in Canon EF mount.
Focal Range
Tamron 150-600mm f5-6.3 VC 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.
On the other hand, the Tamron 70-300mm f4-5.6 VC USD 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.