The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 50mm F1.4 DG DN Art and the Sony FE 50mm F1.8 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. Sigma 50mm F1.4 DG DN Art is the longer of the two lenses at 110mm. The Sony FE 50mm F1.8 with a length of 60mm, is 50mm shorter. Besides being longer, the Sigma 50mm F1.4 DG DN Art also has a larger diameter of 78mm compared to the Sony FE 50mm F1.8's 69mm diameter.
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Below you can find a scaled side-by-side image of Sigma 50mm F1.4 DG DN Art and Sony FE 50mm F1.8 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 50mm F1.8 weighs 186g, 72% (483g) lighter than the Sigma 50mm F1.4 DG DN Art's weight of 669g.
Below you can find the dimension and weight table of the Standard Prime Lenses in Sony E Mount for size comparison purposes.
Standard Lenses in Sony E Mount for Size Comparison
Filter Threads
The Sigma 50mm F1.4 DG DN Art has a filter size of 72mm whereas the Sony FE 50mm F1.8 has a 49mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 72mm filters that we recommend you to consider for the Sigma 50mm F1.4 DG DN Art:
And these are the 49mm filters that we recommend for the Sony FE 50mm F1.8:
Lens Mounts
Both the Sigma 50mm F1.4 DG DN Art and the Sony FE 50mm 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 A9 III, Sony A7C Mark II and Sony A7CR.
Sigma 50mm F1.4 DG DN Art is also available in Leica L mount.
Focal Range
Both lenses have the same focal range of
50mm but while Sigma 50mm F1.4 DG DN Art has the fastest aperture of
F1.4, the Sony FE 50mm F1.8's widest aperture value is
F1.8.