The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 20-70mm F4 G and the Olympus ED 8-25mm F4 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. Sony FE 20-70mm F4 G is the longer of the two lenses at 99mm. The Olympus ED 8-25mm F4 Pro with a length of 89mm, is 10mm shorter. Besides being longer, the Sony FE 20-70mm F4 G also has a larger diameter of 79mm compared to the Olympus ED 8-25mm F4 Pro's 77mm diameter.
Below you can find a scaled side-by-side image of Sony FE 20-70mm F4 G and Olympus ED 8-25mm F4 Pro to get a better idea of how their sizes compare in real life.
Comparison image of the Sony FE 20-70mm F4 G and the Olympus ED 8-25mm F4 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. Olympus ED 8-25mm F4 Pro weighs 411g, 15% (77g) lighter than the Sony FE 20-70mm F4 G's weight of 488g.
Filter Threads
Both the Sony FE 20-70mm F4 G and the Olympus ED 8-25mm F4 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 Sony FE 20-70mm F4 G has the Sony E lens mount whereas the Olympus ED 8-25mm F4 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
Sony FE 20-70mm F4 G has a focal range of 20-70mm and
3.5X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
30 - 105mm .
On the other hand, the Olympus ED 8-25mm F4 Pro has a focal range of 8-25mm and 3.1X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 16-50mm when used on a FourThirds format camera.
