The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 65mm F2 DG DN and the Samyang XP 50mm F1.2 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. Samyang XP 50mm F1.2 is the longer of the two lenses at 117mm. The Sigma 65mm F2 DG DN with a length of 75mm, is 42mm shorter. Besides being longer, the Samyang XP 50mm F1.2 also has a larger diameter of 93mm compared to the Sigma 65mm F2 DG DN's 72mm diameter.
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. Sigma 65mm F2 DG DN weighs 405g, which means it is 795g (66%) lighter than the Samyang XP 50mm F1.2 which has a weight of 1200g.
Filter Threads
The Sigma 65mm F2 DG DN has a filter size of 62mm whereas the Samyang XP 50mm F1.2 has a 86mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 62mm filters that we recommend you to consider for the Sigma 65mm F2 DG DN:
And these are the 86mm filters that we recommend for the Samyang XP 50mm F1.2:
Lens Mounts
The Sigma 65mm F2 DG DN has the Sony E lens mount whereas the Samyang XP 50mm F1.2 has the Canon EF 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 Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Sigma 65mm F2 DG DN is also available in the Leica L mount.
Focal Range
Sigma 65mm F2 DG DN is a prime lens with fixed focal lenght of 65mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
97.5mm.
On the other hand, the Samyang XP 50mm F1.2 is a prime lens with fixed focal lenght of 50mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 80mm.
