The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 85mm F1.4 DG DN and the Sony FE 85mm F1.8 for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Sigma 85mm F1.4 DG DN is the longer of the two lenses at 94mm. The Sony FE 85mm F1.8 with a length of 82mm, is 12mm shorter. Besides being longer, the Sigma 85mm F1.4 DG DN also has a larger diameter of 83mm compared to the Sony FE 85mm F1.8's 78mm diameter.
Below you can find a scaled side-by-side image of Sigma 85mm F1.4 DG DN and Sony FE 85mm F1.8 to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 85mm F1.4 DG DN and the Sony FE 85mm F1.8 Size and Weight The 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, 41% (259g) lighter than the Sigma 85mm F1.4 DG DN 's weight of 630g.
Below you can find the dimension and weight table of the Telephoto Prime Lenses in Sony E Mount for size comparison purposes.
Telephoto Prime Lenses in Sony E Mount for Size Comparison
Lens Mounts
Both the Sigma 85mm F1.4 DG DN and the Sony FE 85mm F1.8 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.
Focal Range
Both lenses have the same focal range of 85mm but while Sigma 85mm F1.4 DG DN has the fastest aperture of F1.4, the Sony FE 85mm F1.8's widest aperture value is F1.8.