The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 12mm f1.4 and the Venus 8-15mm f2.8 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. Venus 8-15mm f2.8 is the longer of the two lenses at 76mm. The Sigma 12mm f1.4 with a length of 67mm, is 9mm shorter. Besides being longer, the Venus 8-15mm f2.8 also has a larger diameter of 95mm compared to the Sigma 12mm f1.4's 69mm 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 12mm f1.4 weighs 250g, which means it is 400g (61%) lighter than the Venus 8-15mm f2.8 which has a weight of 650g.
Lens Mounts
Both the Sigma 12mm f1.4 and the Venus 8-15mm f2.8 has the same Canon RF lens mount. Some of the latest released cameras that are compatible with the Canon RF lenses are RED Komodo-X 6K, RED Komodo 6K and Canon EOS C70.
Sigma 12mm f1.4 is also available in the Sony E and Fujifilm X mounts.
Venus 8-15mm f2.8 is also available in Sony E , Nikon Z and Leica L mounts.
Focal Range
Sigma 12mm f1.4 is a prime lens with fixed focal lenght of 12mm which has an effective (full-frame 35mm equivalent) focal range of
18mm when used on a APS-C / DX format camera.
On the other hand, the Venus 8-15mm f2.8 has a focal range of 8-15mm and 1.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 12.8 - 24mm.
