The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 100-400mm F4.5 and the Sigma 500mm f5.6 DG DN 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 100-400mm F4.5 is the longer of the two lenses at 328mm. The Sigma 500mm f5.6 DG DN with a length of 236mm, is 92mm shorter. Besides being longer, the Sony FE 100-400mm F4.5 also has a larger diameter of 120mm compared to the Sigma 500mm f5.6 DG DN's 108mm diameter.
Below you can find a scaled side-by-side image of Sony FE 100-400mm F4.5 and Sigma 500mm f5.6 DG DN to get a better idea of how their sizes compare in real life.
Comparison image of the Sony FE 100-400mm F4.5 and the Sigma 500mm f5.6 DG DN 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. Sigma 500mm f5.6 DG DN weighs 1365g, 25% (475g) lighter than the Sony FE 100-400mm F4.5's weight of 1840g.
Filter Threads
Both the Sony FE 100-400mm F4.5 and the Sigma 500mm f5.6 DG DN 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
Both the Sony FE 100-400mm F4.5 and the Sigma 500mm f5.6 DG DN has the same Sony E lens mount . Some of the latest released cameras that are compatible with the Sony E lenses are Sony FX5 , Sony A7R VI and Sony A7 V .
Sigma 500mm f5.6 DG DN is also available in Leica L mount.
Focal Range
Sony FE 100-400mm F4.5 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 500mm f5.6 DG DN is a prime lens with fixed focal lenght of 500mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 750mm .