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 Carl Zeiss Makro-Planar T2/100 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. Carl Zeiss Makro-Planar T2/100 is the longer of the two lenses at 113mm. The Tamron 24-70mm F2.8 Di VC USD G2 with a length of 111mm, is 2mm shorter. On the other hand, the Tamron 24-70mm F2.8 Di VC USD G2 has a larger diameter of 88mm compared to the Carl Zeiss Makro-Planar T2/100's 76mm 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. Carl Zeiss Makro-Planar T2/100 weighs 680g, 24% (225g) 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 Carl Zeiss Makro-Planar T2/100 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 Carl Zeiss Makro-Planar T2/100:
Lens Mounts
The Tamron 24-70mm F2.8 Di VC USD G2 has the Canon EF lens mount whereas the Carl Zeiss Makro-Planar T2/100 has the Pentax KAF 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 Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF Mount.
Tamron 24-70mm F2.8 Di VC USD G2 is also available in the Nikon F (FX) mount.
Carl Zeiss Makro-Planar T2/100 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 Carl Zeiss Makro-Planar T2/100 is a prime lens with fixed focal lenght of 100mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 150mm.