The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 20-200mm F3.5-6.3 and the Olympus 12-100mm F4.0 IS Pro 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 20-200mm F3.5-6.3 is the longer of the two lenses at 118mm. The Olympus 12-100mm F4.0 IS Pro with a length of 117mm, is 1mm shorter. On the other hand, the Olympus 12-100mm F4.0 IS Pro has a larger diameter of 78mm compared to the Sigma 20-200mm F3.5-6.3's 77mm diameter.
Below you can find a scaled side-by-side image of Sigma 20-200mm F3.5-6.3 and Olympus 12-100mm F4.0 IS Pro to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 20-200mm F3.5-6.3 and the Olympus 12-100mm F4.0 IS Pro 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 20-200mm F3.5-6.3 weighs 540g, which means it is 21g (3%) lighter than the Olympus 12-100mm F4.0 IS Pro which has a weight of 561g.
Filter Threads
Both the Sigma 20-200mm F3.5-6.3 and the Olympus 12-100mm F4.0 IS Pro have the same Filter thread size of 72mm .
Below are links to the 72mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Sigma 20-200mm F3.5-6.3 has the Sony E lens mount whereas the Olympus 12-100mm F4.0 IS Pro has the Micro Four Thirds lens mount . Some of the latest released cameras that are compatible with these mounts are Sony FX5 , Sony A7R VI and Sony A7 V for the Sony E Mount and OM System OM-3 Astro , OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount.
Focal Range
Sigma 20-200mm F3.5-6.3 has a focal range of 20-200mm and
10.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
30 - 300mm .
On the other hand, the Olympus 12-100mm F4.0 IS Pro has a focal range of 12-100mm and 8.3X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 24-200mm when used on a FourThirds format camera.
