The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 85mm F1.4 GM and the Sony FE 70-200mm F2.8 GM 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 70-200mm F2.8 GM is the longer of the two lenses at 200mm. The Sony FE 85mm F1.4 GM with a length of 108mm, is 92mm shorter. On the other hand, the Sony FE 85mm F1.4 GM has a larger diameter of 90mm compared to the Sony FE 70-200mm F2.8 GM's 88mm diameter.
tt
Below you can find a scaled side-by-side image of Sony FE 85mm F1.4 GM and Sony FE 70-200mm F2.8 GM to get a better idea of how their sizes compare in real life.
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 85mm F1.4 GM weighs 820g, which means it is 660g (44%) lighter than the Sony FE 70-200mm F2.8 GM which has a weight of 1480g.
Filter Threads
Both the Sony FE 85mm F1.4 GM and the Sony FE 70-200mm F2.8 GM 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
Both the Sony FE 85mm F1.4 GM and the Sony FE 70-200mm F2.8 GM has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony A9 III, Sony A7C Mark II and Sony A7CR.
Focal Range
Sony FE 85mm F1.4 GM is a prime lens with fixed focal lenght of 85mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
127.5mm.
On the other hand, the Sony FE 70-200mm F2.8 GM 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.