The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Leica SL 100-400 f5-6.3 and the Sony FE 200-600 F5.6-6.3 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. Sony FE 200-600 F5.6-6.3 is the longer of the two lenses at 318mm. The Leica SL 100-400 f5-6.3 with a length of 198mm, is 120mm shorter. Besides being longer, the Sony FE 200-600 F5.6-6.3 also has a larger diameter of 112mm compared to the Leica SL 100-400 f5-6.3's 88mm diameter.
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Below you can find a scaled side-by-side image of Leica SL 100-400 f5-6.3 and Sony FE 200-600 F5.6-6.3 to get a better idea of how their sizes compare in real life.
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. Leica SL 100-400 f5-6.3 weighs 1530g, which means it is 585g (27%) lighter than the Sony FE 200-600 F5.6-6.3 which has a weight of 2115g.
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Filter Threads
The Leica SL 100-400 f5-6.3 has a filter size of 82mm whereas the Sony FE 200-600 F5.6-6.3 has a 95mm 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 Leica SL 100-400 f5-6.3:
And these are the 95mm filters that we recommend for the Sony FE 200-600 F5.6-6.3:
Lens Mounts
The Leica SL 100-400 f5-6.3 has the Leica L lens mount whereas the Sony FE 200-600 F5.6-6.3 has the Sony E lens mount. Some of the latest released cameras that are compatible with these mounts are Leica SL3, Panasonic S5 II and Panasonic S5 II X for the Leica L Mount and Sony A9 III, Sony A7C Mark II and Sony A7CR for the Sony E Mount.
Focal Range
Leica SL 100-400 f5-6.3 has a focal range of 100-400mm and
4.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
150 - 600mm.
On the other hand, the 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.