The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang AF 35-150mm F2-2.8 L and the Sigma 28-45mm 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. Samyang AF 35-150mm F2-2.8 L is the longer of the two lenses at 155mm. The Sigma 28-45mm F1.8 with a length of 151mm, is 4mm shorter. Besides being longer, the Samyang AF 35-150mm F2-2.8 L also has a larger diameter of 93mm compared to the Sigma 28-45mm F1.8's 88mm 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 28-45mm F1.8 weighs 960g, 20% (246g) lighter than the Samyang AF 35-150mm F2-2.8 L's weight of 1206g.
Filter Threads
Both the Samyang AF 35-150mm F2-2.8 L and the Sigma 28-45mm F1.8 have the same Filter thread size of 82mm.
Below are links to the 82mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Samyang AF 35-150mm F2-2.8 L has the Leica L lens mount whereas the Sigma 28-45mm F1.8 has the Sony E lens mount. Some of the latest released cameras that are compatible with these mounts are Leica SL3-P, Panasonic S1 II and Panasonic S1 IIE for the Leica L Mount and Sony FX5, Sony A7R VI and Sony A7 V for the Sony E Mount.
Sigma 28-45mm F1.8 is also available in Leica L mount.
Focal Range
Samyang AF 35-150mm F2-2.8 L has a focal range of 35-150mm and
4.3X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
52.5 - 225mm.
On the other hand, the Sigma 28-45mm F1.8 has a focal range of 28-45mm and 1.6X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 42 - 67.5mm.
