The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Nikon Z 24-70mm F2.8 II and the Sirui 35mm F1.4 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. Nikon Z 24-70mm F2.8 II is the longer of the two lenses at 142mm. The Sirui 35mm F1.4 with a length of 103mm, is 39mm shorter. Besides being longer, the Nikon Z 24-70mm F2.8 II also has a larger diameter of 84mm compared to the Sirui 35mm F1.4's 76mm 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. Sirui 35mm F1.4 weighs 540g, 19% (135g) lighter than the Nikon Z 24-70mm F2.8 II's weight of 675g.
Filter Threads
The Nikon Z 24-70mm F2.8 II has a filter size of 77mm whereas the Sirui 35mm F1.4 has a 62mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Nikon Z 24-70mm F2.8 II:
And these are the 62mm filters that we recommend for the Sirui 35mm F1.4:
Lens Mounts
The Nikon Z 24-70mm F2.8 II has the Nikon Z lens mount whereas the Sirui 35mm F1.4 has the Sony E lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon ZR, Nikon Z5 II and RED Komodo-X 6K Z for the Nikon Z Mount and Sony FX5, Sony A7R VI and Sony A7 V for the Sony E Mount.
Sirui 35mm F1.4 is also available in Nikon Z , Fujifilm X and Leica L mounts.
Focal Range
Nikon Z 24-70mm F2.8 II has a focal range of 24-70mm and
2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
36 - 105mm.
On the other hand, the Sirui 35mm F1.4 is a prime lens with fixed focal lenght of 35mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 52.5mm.