The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 150-500mm F5-6.7 and the Samyang 300mm f6.3 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 150-500mm F5-6.7 is the longer of the two lenses at 210mm. The Samyang 300mm f6.3 with a length of 74mm, is 136mm shorter. Besides being longer, the Tamron 150-500mm F5-6.7 also has a larger diameter of 93mm compared to the Samyang 300mm f6.3's 65mm 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. Samyang 300mm f6.3 weighs 318g, 81% (1392g) lighter than the Tamron 150-500mm F5-6.7's weight of 1710g.
Lens Mounts
Both the Tamron 150-500mm F5-6.7 and the Samyang 300mm f6.3 has the same Fujifilm X lens mount. Some of the latest released cameras that are compatible with the Fujifilm X lenses are Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5.
Tamron 150-500mm F5-6.7 is also available in the Sony E and Nikon Z mounts.
Samyang 300mm f6.3 is also available in Canon EF-M , Micro Four Thirds and Sony E mounts.
Focal Range
Tamron 150-500mm F5-6.7 has a focal range of 150-500mm and
3.3X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
225 - 750mm.
On the other hand, the Samyang 300mm f6.3 is a prime lens with fixed focal lenght of 300mm which has an effective (full-frame 35mm equivalent) focal range of 450mm when used on a APS-C / DX format camera.
