The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony E 18-55mm F3.5-5.6 OSS and the Sigma 19mm F2.8 EX DN 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 E 18-55mm F3.5-5.6 OSS is the longer of the two lenses at 60mm. The Sigma 19mm F2.8 EX DN with a length of 46mm, is 14mm shorter. Besides being longer, the Sony E 18-55mm F3.5-5.6 OSS also has a larger diameter of 62mm compared to the Sigma 19mm F2.8 EX DN's 61mm 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. Sigma 19mm F2.8 EX DN weighs 140g, 34% (74g) lighter than the Sony E 18-55mm F3.5-5.6 OSS's weight of 214g.
Filter Threads
The Sony E 18-55mm F3.5-5.6 OSS has a filter size of 49mm whereas the Sigma 19mm F2.8 EX DN has a 46mm 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 E 18-55mm F3.5-5.6 OSS:
And these are the 46mm filters that we recommend for the Sigma 19mm F2.8 EX DN:
Lens Mounts
Both the Sony E 18-55mm F3.5-5.6 OSS and the Sigma 19mm F2.8 EX DN has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony ZV-E10 II, Sony A6700 and Sony FX30.
Sigma 19mm F2.8 EX DN is also available in Micro Four Thirds mount.
Focal Range
Sony E 18-55mm F3.5-5.6 OSS has a focal range of 18-55mm and
3.1X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
27-82.5mm when used on a APS-C / DX format camera.
On the other hand, the Sigma 19mm F2.8 EX DN is a prime lens with fixed focal lenght of 19mm which has an effective (full-frame 35mm equivalent) focal range of 28.5mm when used on a APS-C / DX format camera.
