The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Yongnuo 56mm F1.4S Z and the Yongnuo 23mm 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. Yongnuo 56mm F1.4S Z is the longer of the two lenses at 89mm. The Yongnuo 23mm F1.4S E with a length of 85mm, is 4mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 69mm.
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 23mm F1.4S E weighs 360g, 4% (15g) lighter than the Yongnuo 56mm F1.4S Z's weight of 375g.
Filter Threads
Both the Yongnuo 56mm F1.4S Z and the Yongnuo 23mm F1.4S E have the same Filter thread size of 58mm.
Below are links to the 58mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Yongnuo 56mm F1.4S Z has the Nikon Z lens mount whereas the Yongnuo 23mm F1.4S E has the Sony E lens mount. Some of the latest released cameras that are compatible with these mounts are RED Komodo-X 6K Z, Nikon Z50 II and Nikon Z30 for the Nikon Z Mount and Sony ZV-E10 II, Sony A6700 and Sony FX30 for the Sony E Mount.
Focal Range
Yongnuo 56mm F1.4S Z is a prime lens with fixed focal lenght of 56mm which has an effective (full-frame 35mm equivalent) focal range of
84mm when used on a APS-C / DX format camera.
On the other hand, the Yongnuo 23mm F1.4S E is a prime lens with fixed focal lenght of 23mm which has an effective (full-frame 35mm equivalent) focal range of 34.5mm when used on a APS-C / DX format camera.