The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE PZ 16-35mm F4 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, 60% (213g) lighter than the Sony FE PZ 16-35mm F4's weight of 353g.
Lens Mounts
Both the Sony FE PZ 16-35mm F4 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 FX5, Sony A7R VI and Sony A7 V.
Sigma 19mm F2.8 DN is also available in Micro Four Thirds mount.
Focal Range
Sony FE PZ 16-35mm F4 has a focal range of 16-35mm and
2.2X zoom ratio .
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.
