The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 24-70mm F2.8 Di VC USD G2 and the Tamron 45mm F1.8 Di 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 24-70mm F2.8 Di VC USD G2 is the longer of the two lenses at 111mm. The Tamron 45mm F1.8 Di VC USD with a length of 92mm, is 19mm shorter. Besides being longer, the Tamron 24-70mm F2.8 Di VC USD G2 also has a larger diameter of 88mm compared to the Tamron 45mm F1.8 Di VC USD's 80mm 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 45mm F1.8 Di VC USD weighs 520g, 42% (385g) lighter than the Tamron 24-70mm F2.8 Di VC USD G2's weight of 905g.
Filter Threads
The Tamron 24-70mm F2.8 Di VC USD G2 has a filter size of 82mm whereas the Tamron 45mm F1.8 Di VC USD 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 82mm filters that we recommend you to consider for the Tamron 24-70mm F2.8 Di VC USD G2:
And these are the 67mm filters that we recommend for the Tamron 45mm F1.8 Di VC USD:
Lens Mounts
The Tamron 24-70mm F2.8 Di VC USD G2 has the Canon EF lens mount whereas the Tamron 45mm F1.8 Di VC USD has the Sony Alpha lens mount. Some of the latest released cameras that are compatible with these mounts are Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount and Sony A99 II, Sony A68 and Sony A77 II for the Sony Alpha Mount.
Tamron 24-70mm F2.8 Di VC USD G2 is also available in the Nikon F (FX) mount.
Tamron 45mm F1.8 Di VC USD is also available in Canon EF and Nikon F (FX) mounts.
Focal Range
Tamron 24-70mm F2.8 Di VC USD G2 has a focal range of 24-70mm and
2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
38.4 - 112mm.
On the other hand, the Tamron 45mm F1.8 Di VC USD is a prime lens with fixed focal lenght of 45mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 67.5mm.
