The type of photography that you are planning to use is an important decision factor. Here we have evaluated the OM 50-200mm F2.8 and the Sony FE 70-200mm F4 G OSS II 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. OM 50-200mm F2.8 is the longer of the two lenses at 226mm. The Sony FE 70-200mm F4 G OSS II with a length of 149mm, is 77mm shorter. Besides being longer, the OM 50-200mm F2.8 also has a larger diameter of 91mm compared to the Sony FE 70-200mm F4 G OSS II's 82mm diameter.
Below you can find a scaled side-by-side image of OM 50-200mm F2.8 and Sony FE 70-200mm F4 G OSS II to get a better idea of how their sizes compare in real life.
Comparison image of the OM 50-200mm F2.8 and the Sony FE 70-200mm F4 G OSS II 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. Sony FE 70-200mm F4 G OSS II weighs 794g, 26% (281g) lighter than the OM 50-200mm F2.8's weight of 1075g.
Filter Threads
The OM 50-200mm F2.8 has a filter size of 77mm whereas the Sony FE 70-200mm F4 G OSS II has a 72mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the OM 50-200mm F2.8:
And these are the 72mm filters that we recommend for the Sony FE 70-200mm F4 G OSS II:
Lens Mounts
The OM 50-200mm F2.8 has the Micro Four Thirds lens mount whereas the Sony FE 70-200mm F4 G OSS II has the Sony E 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 Sony FX5 , Sony A7R VI and Sony A7 V for the Sony E Mount.
Focal Range
OM 50-200mm F2.8 has a focal range of 50-200mm and
4.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
100-400mm when used on a FourThirds format camera.
On the other hand, the Sony FE 70-200mm F4 G OSS II has a focal range of 70-200mm and 2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 105 - 300mm .