The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sirui 35mm F1.4 and the Yongnuo 33mm F1.4S E 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. Sirui 35mm F1.4 is the longer of the two lenses at 101mm. The Yongnuo 33mm F1.4S E with a length of 87mm, is 14mm shorter. Besides being longer, the Sirui 35mm F1.4 also has a larger diameter of 76mm compared to the Yongnuo 33mm F1.4S E'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. Yongnuo 33mm F1.4S E weighs 370g, 25% (124g) lighter than the Sirui 35mm F1.4's weight of 494g.
Filter Threads
The Sirui 35mm F1.4 has a filter size of 62mm whereas the Yongnuo 33mm F1.4S E has a 58mm 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 Sirui 35mm F1.4:
And these are the 58mm filters that we recommend for the Yongnuo 33mm F1.4S E:
Lens Mounts
The Sirui 35mm F1.4 has the Leica L lens mount whereas the Yongnuo 33mm F1.4S E 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 ZV-E10 II, Sony A6700 and Sony FX30 for the Sony E Mount.
Sirui 35mm F1.4 is also available in the Sony E , Nikon Z and Fujifilm X mounts.
Focal Range
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.
On the other hand, the Yongnuo 33mm F1.4S E is a prime lens with fixed focal lenght of 33mm which has an effective (full-frame 35mm equivalent) focal range of 49.5mm when used on a APS-C / DX format camera.
