The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Olympus ED 35-100mm f2.0 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. Olympus ED 35-100mm f2.0 is the longer of the two lenses at 214mm. The Sony FE 70-200mm F2.8 GM II with a length of 200mm, is 14mm shorter. Besides being longer, the Olympus ED 35-100mm f2.0 also has a larger diameter of 97mm compared to the Sony FE 70-200mm F2.8 GM II's 88mm diameter.
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, 36% (605g) lighter than the Olympus ED 35-100mm f2.0's weight of 1650g.
Filter Threads
Both the Olympus ED 35-100mm f2.0 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 Olympus ED 35-100mm f2.0 has the 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 Olympus E-5, Olympus E-600 and Olympus E-620 for the Four Thirds Mount and Sony FX5, Sony A7R VI and Sony A7 V for the Sony E Mount.
Focal Range
Olympus ED 35-100mm f2.0 has a focal range of 35-100mm and
2.9X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
70-200mm 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.