The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 35mm f1.4 II and the Tamron 35mm F2.8 Di III OSD M1:2 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. Sigma 35mm f1.4 II is the longer of the two lenses at 96mm. The Tamron 35mm F2.8 Di III OSD M1:2 with a length of 64mm, is 32mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 73mm.
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. Tamron 35mm F2.8 Di III OSD M1:2 weighs 210g, 60% (315g) lighter than the Sigma 35mm f1.4 II's weight of 525g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Sony E Mount for size comparison purposes.
Wideangle Lenses in Sony E Mount for Size Comparison
Filter Threads
Both the Sigma 35mm f1.4 II and the Tamron 35mm F2.8 Di III OSD M1:2 have the same Filter thread size of 67mm.
Below are links to the 67mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Sigma 35mm f1.4 II and the Tamron 35mm F2.8 Di III OSD M1:2 has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony FX5, Sony A7R VI and Sony A7 V.
Sigma 35mm f1.4 II is also available in the Leica L mount.
Focal Range
Both lenses have the same focal range of
35mm but while Sigma 35mm f1.4 II has the fastest aperture of
F1.4, the Tamron 35mm F2.8 Di III OSD M1:2's widest aperture value is
F2.8.