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 Sigma 150-600mm F5-6.3 DG DN OS 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. Sigma 150-600mm F5-6.3 DG DN OS is the longer of the two lenses at 266mm. The Leica SL 100-400 f5-6.3 with a length of 198mm, is 68mm shorter. Besides being longer, the Sigma 150-600mm F5-6.3 DG DN OS also has a larger diameter of 109mm compared to the Leica SL 100-400 f5-6.3's 88mm diameter.
Below you can find a scaled side-by-side image of Leica SL 100-400 f5-6.3 and Sigma 150-600mm F5-6.3 DG DN OS to get a better idea of how their sizes compare in real life.
Comparison image of the Leica SL 100-400 f5-6.3 and the Sigma 150-600mm F5-6.3 DG DN OS Size and Weight 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 570g (27%) lighter than the Sigma 150-600mm F5-6.3 DG DN OS which has a weight of 2100g.
Below you can find the dimension and weight table of the Telephoto Zoom Lenses in Leica L Mount for size comparison purposes.
Super Telephoto Lenses in Leica L Mount for Size Comparison
Filter Threads
The Leica SL 100-400 f5-6.3 has a filter size of 82mm whereas the Sigma 150-600mm F5-6.3 DG DN OS 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 Sigma 150-600mm F5-6.3 DG DN OS:
Lens Mounts
Both the Leica SL 100-400 f5-6.3 and the Sigma 150-600mm F5-6.3 DG DN OS has the same Leica L lens mount . Some of the latest released cameras that are compatible with the Leica L lenses are Leica SL3-P , Panasonic S1 II and Panasonic S1 IIE .
Sigma 150-600mm F5-6.3 DG DN OS is also available in 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 Sigma 150-600mm F5-6.3 DG DN OS has a focal range of 150-600mm 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 225 - 900mm .