The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 500mm f5.6 DG DN and the Tamron 50-400mm F4.5-6.3 VC 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 500mm f5.6 DG DN is the longer of the two lenses at 236mm. The Tamron 50-400mm F4.5-6.3 VC with a length of 183mm, is 53mm shorter. Besides being longer, the Sigma 500mm f5.6 DG DN also has a larger diameter of 108mm compared to the Tamron 50-400mm F4.5-6.3 VC's 89mm diameter.
Below you can find a scaled side-by-side image of Sigma 500mm f5.6 DG DN and Tamron 50-400mm F4.5-6.3 VC to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 500mm f5.6 DG DN and the Tamron 50-400mm F4.5-6.3 VC 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. Tamron 50-400mm F4.5-6.3 VC weighs 1155g, 15% (210g) lighter than the Sigma 500mm f5.6 DG DN's weight of 1365g.
Filter Threads
The Sigma 500mm f5.6 DG DN has a filter size of 95mm whereas the Tamron 50-400mm F4.5-6.3 VC has a 67mm 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 Sigma 500mm f5.6 DG DN:
And these are the 67mm filters that we recommend for the Tamron 50-400mm F4.5-6.3 VC:
Lens Mounts
Both the Sigma 500mm f5.6 DG DN and the Tamron 50-400mm F4.5-6.3 VC 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 the Leica L mount.
Tamron 50-400mm F4.5-6.3 VC is also available in Nikon Z mount.
Focal Range
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 .
On the other hand, the Tamron 50-400mm F4.5-6.3 VC has a focal range of 50-400mm and 8.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 75 - 600mm .