The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 85mm F1.8 and the Sony FE 90mm F2.8 Macro G OSS for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Sony FE 90mm F2.8 Macro G OSS is the longer of the two lenses at 131mm. The Sony FE 85mm F1.8 with a length of 82mm is 49mm shorter. Besides being longer, the Sony FE 90mm F2.8 Macro G OSS also has a larger diameter of 79mm compared to Sony FE 85mm F1.8's 78mm diameter.
Below you can find the scaled side by side image of Sony FE 85mm F1.8 and Sony FE 90mm F2.8 Macro G OSS to get a better idea of how their size compare in real life.
Weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Sony FE 85mm F1.8 weighs 371g, which means it is 231g (38%) lighter than the Sony FE 90mm F2.8 Macro G OSS which has a weight of 602g.
Both Sony FE 85mm F1.8 and Sony FE 90mm F2.8 Macro G OSS has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony A7R V, Sony FX30 and Sony A7 IV.
Sony FE 85mm F1.8 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 an 35mm (FF) equivalent of 127.5mm.
Sony FE 90mm F2.8 Macro G OSS is a prime lens with fixed focal lenght of 90mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 135mm.