The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony 24mm F2 SSM CZ and the Sony 20mm 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. Sony 24mm F2 SSM CZ is the longer of the two lenses at 76mm. The Sony 20mm F2.8 with a length of 54mm, is 22mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 78mm.
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. Sony 20mm F2.8 weighs 285g, 48% (270g) lighter than the Sony 24mm F2 SSM CZ's weight of 555g.
Both the Sony 24mm F2 SSM CZ and the Sony 20mm F2.8 have the same Filter thread size of 72mm.
Below are links to the 72mm filters that we recommend you to consider for these lenses:
Both the Sony 24mm F2 SSM CZ and the Sony 20mm F2.8 has the same Sony Alpha lens mount. Some of the latest released cameras that are compatible with the Sony Alpha lenses are Sony A99 II, Sony A68 and Sony A77 II.
Sony 24mm F2 SSM CZ is a prime lens with fixed focal lenght of 24mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 36mm
On the other hand, the Sony 20mm F2.8 is a prime lens with fixed focal lenght of 20mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 30mm.