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 Olympus 150-400mm F4.5 TC 1.25x IS 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 Olympus 150-400mm F4.5 TC 1.25x IS with a length of 314mm, is 4mm shorter. On the other hand, the Olympus 150-400mm F4.5 TC 1.25x IS has a larger diameter of 116mm 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. Olympus 150-400mm F4.5 TC 1.25x IS weighs 1850g, 12% (265g) lighter than the Sony FE 200-600 F5.6-6.3's weight of 2115g.
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Filter Threads
Both the Sony FE 200-600 F5.6-6.3 and the Olympus 150-400mm F4.5 TC 1.25x IS have the same Filter thread size of 95mm.
Below are links to the 95mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Sony FE 200-600 F5.6-6.3 has the Sony E lens mount whereas the Olympus 150-400mm F4.5 TC 1.25x IS has the Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with these mounts are Sony A9 III, Sony A7C Mark II and Sony A7CR for the Sony E Mount and OM System OM-1 II, Panasonic G9 II and OM System OM-5 for the Micro Four Thirds 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 Olympus 150-400mm F4.5 TC 1.25x IS has a focal range of 150-400mm and 2.7X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 300-800mm when used on a FourThirds format camera.