The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 28mm F2 and the Sony FE 28-70mm F3.5-5.6 OSS 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 FE 28-70mm F3.5-5.6 OSS is the longer of the two lenses at 83mm. The Sony FE 28mm F2 with a length of 60mm, is 23mm shorter. Besides being longer, the Sony FE 28-70mm F3.5-5.6 OSS also has a larger diameter of 73mm compared to the Sony FE 28mm F2's 64mm diameter.
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Below you can find a scaled side-by-side image of Sony FE 28mm F2 and Sony FE 28-70mm F3.5-5.6 OSS to get a better idea of how their sizes compare in real life.
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 FE 28mm F2 weighs 200g, which means it is 95g (32%) lighter than the Sony FE 28-70mm F3.5-5.6 OSS which has a weight of 295g.
Filter Threads
The Sony FE 28mm F2 has a filter size of 49mm whereas the Sony FE 28-70mm F3.5-5.6 OSS has a 55mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 49mm filters that we recommend you to consider for the Sony FE 28mm F2:
And these are the 55mm filters that we recommend for the Sony FE 28-70mm F3.5-5.6 OSS:
Lens Mounts
Both the Sony FE 28mm F2 and the Sony FE 28-70mm F3.5-5.6 OSS has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony A9 III, Sony A7C Mark II and Sony A7CR.
Focal Range
Sony FE 28mm F2 is a prime lens with fixed focal lenght of 28mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
42mm.
On the other hand, the Sony FE 28-70mm F3.5-5.6 OSS has a focal range of 28-70mm and 2.5X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 42 - 105mm.