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 F2.8 GM 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 F2.8 GM II with a length of 200mm, is 26mm shorter. Besides being longer, the OM 50-200mm F2.8 also has a larger diameter of 91mm compared to the Sony FE 70-200mm F2.8 GM II's 88mm diameter.
Below you can find a scaled side-by-side image of OM 50-200mm F2.8 and Sony FE 70-200mm F2.8 GM 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 F2.8 GM 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 F2.8 GM II weighs 1045g, 2% (30g) lighter than the OM 50-200mm F2.8's weight of 1075g.
Filter Threads
Both the OM 50-200mm F2.8 and the Sony FE 70-200mm F2.8 GM II have the same Filter thread size of 77mm .
Below are links to the 77mm filters that we recommend you to consider for these lenses:
Lens Mounts
The OM 50-200mm F2.8 has the Micro Four Thirds lens mount whereas the Sony FE 70-200mm F2.8 GM 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 F2.8 GM 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 .