The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Viltrox AF 56mm F1.2 Pro and the Tamron 28-75mm F2.8 Di III 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 28-75mm F2.8 Di III is the longer of the two lenses at 118mm. The Viltrox AF 56mm F1.2 Pro with a length of 92mm, is 26mm shorter. On the other hand, the Viltrox AF 56mm F1.2 Pro has a larger diameter of 78mm compared to the Tamron 28-75mm F2.8 Di III'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. Tamron 28-75mm F2.8 Di III weighs 540g, 5% (30g) lighter than the Viltrox AF 56mm F1.2 Pro's weight of 570g.
Filter Threads
Both the Viltrox AF 56mm F1.2 Pro and the Tamron 28-75mm F2.8 Di III have the same Filter thread size of 67mm.
Below are links to the 67mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Viltrox AF 56mm F1.2 Pro has the Nikon Z lens mount whereas the Tamron 28-75mm F2.8 Di III has the Sony E lens mount. Some of the latest released cameras that are compatible with these mounts are RED Komodo-X 6K Z, Nikon Z50 II and Nikon Z30 for the Nikon Z Mount and Sony FX5, Sony A7R VI and Sony A7 V for the Sony E Mount.
Viltrox AF 56mm F1.2 Pro is also available in the Sony E and Fujifilm X mounts.
Tamron 28-75mm F2.8 Di III is also available in Sony E and Nikon Z mounts.
Focal Range
Viltrox AF 56mm F1.2 Pro is a prime lens with fixed focal lenght of 56mm which has an effective (full-frame 35mm equivalent) focal range of
84mm when used on a APS-C / DX format camera.
On the other hand, the Tamron 28-75mm F2.8 Di III has a focal range of 28-75mm and 2.7X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 42 - 112.5mm.
