The type of photography that you are planning to use is an important decision factor. Here we have evaluated the OM System 100-400mm F5.0-6.3 II and the Sigma 150-600mm F5-6.3 DG OS HSM C 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 OS HSM C is the longer of the two lenses at 290mm. The OM System 100-400mm F5.0-6.3 II with a length of 206mm, is 84mm shorter. Besides being longer, the Sigma 150-600mm F5-6.3 DG OS HSM C also has a larger diameter of 121mm compared to the OM System 100-400mm F5.0-6.3 II's 86mm diameter.
Below you can find a scaled side-by-side image of OM System 100-400mm F5.0-6.3 II and Sigma 150-600mm F5-6.3 DG OS HSM C to get a better idea of how their sizes compare in real life.
Comparison image of the OM System 100-400mm F5.0-6.3 II and the Sigma 150-600mm F5-6.3 DG OS HSM C 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. OM System 100-400mm F5.0-6.3 II weighs 1300g, which means it is 630g (32%) lighter than the Sigma 150-600mm F5-6.3 DG OS HSM C which has a weight of 1930g.
Filter Threads
The OM System 100-400mm F5.0-6.3 II has a filter size of 72mm whereas the Sigma 150-600mm F5-6.3 DG OS HSM C 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 72mm filters that we recommend you to consider for the OM System 100-400mm F5.0-6.3 II:
And these are the 95mm filters that we recommend for the Sigma 150-600mm F5-6.3 DG OS HSM C:
Lens Mounts
The OM System 100-400mm F5.0-6.3 II has the Micro Four Thirds lens mount whereas the Sigma 150-600mm F5-6.3 DG OS HSM C has the Nikon F (FX) lens mount . Some of the latest released cameras that are compatible with these mounts are OM System OM-3 Astro , OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount and Nikon D6 , Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount.
Canon EF , Sigma SA and Sony Alpha mounts.
Focal Range
OM System 100-400mm F5.0-6.3 II has a focal range of 100-400mm and
4.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
200-800mm when used on a FourThirds format camera.
On the other hand, the Sigma 150-600mm F5-6.3 DG OS HSM C 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 .
