The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony E 10-20mm F4 PZ G and the Sigma 19mm F2.8 DN for their suitability to various photography scenarios:
Size and Weight Comparison
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 DN weighs 140g, 21% (38g) lighter than the Sony E 10-20mm F4 PZ G's weight of 178g.
Lens Mounts
Both the Sony E 10-20mm F4 PZ G and the Sigma 19mm F2.8 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 DN is also available in Micro Four Thirds mount.
Focal Range
Sony E 10-20mm F4 PZ G has a focal range of 10-20mm and
2.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
15-30mm when used on a APS-C / DX format camera.
On the other hand, the Sigma 19mm F2.8 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.
