The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 200-600 F5.6-6.3 and the Sigma 120-300mm F2.8 EX DG OS HSM 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. Sony FE 200-600 F5.6-6.3 is the longer of the two lenses at 318mm. The Sigma 120-300mm F2.8 EX DG OS HSM with a length of 289mm, is 29mm shorter. On the other hand, the Sigma 120-300mm F2.8 EX DG OS HSM has a larger diameter of 114mm compared to the Sony FE 200-600 F5.6-6.3's 112mm 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. Sony FE 200-600 F5.6-6.3 weighs 2115g, which means it is 835g (28%) lighter than the Sigma 120-300mm F2.8 EX DG OS HSM which has a weight of 2950g.
Filter Threads
The Sony FE 200-600 F5.6-6.3 has a filter size of 95mm whereas the Sigma 120-300mm F2.8 EX DG OS HSM has a 105mm 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 Sony FE 200-600 F5.6-6.3:
And these are the 105mm filters that we recommend for the Sigma 120-300mm F2.8 EX DG OS HSM:
Lens Mounts
The Sony FE 200-600 F5.6-6.3 has the Sony E lens mount whereas the Sigma 120-300mm F2.8 EX DG OS HSM has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Sony FX5, Sony A7R VI and Sony A7 V for the Sony E Mount and Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Sigma 120-300mm F2.8 EX DG OS HSM is also available in Nikon F (FX) mount.
Focal Range
Sony FE 200-600 F5.6-6.3 has a focal range of 200-600mm and
3.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
300 - 900mm.
On the other hand, the Sigma 120-300mm F2.8 EX DG OS HSM has a focal range of 120-300mm and 2.5X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 192 - 480mm.
