The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony E 16-50mm F3.5-5.6 PZ OSS and the Sigma 70mm F2.8 EX DG Macro 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. Sigma 70mm F2.8 EX DG Macro is the longer of the two lenses at 95mm. The Sony E 16-50mm F3.5-5.6 PZ OSS with a length of 30mm, is 65mm shorter. Besides being longer, the Sigma 70mm F2.8 EX DG Macro also has a larger diameter of 76mm compared to the Sony E 16-50mm F3.5-5.6 PZ OSS's 65mm 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. Sony E 16-50mm F3.5-5.6 PZ OSS weighs 116g, which means it is 411g (77%) lighter than the Sigma 70mm F2.8 EX DG Macro which has a weight of 527g.
Lens Mounts
The Sony E 16-50mm F3.5-5.6 PZ OSS has the Sony E lens mount whereas the Sigma 70mm F2.8 EX DG Macro has the Sony Alpha lens mount. Some of the latest released cameras that are compatible with these mounts are Sony ZV-E10 II, Sony A6700 and Sony FX30 for the Sony E Mount and Sony A99 II, Sony A68 and Sony A77 II for the Sony Alpha Mount.
Sigma 70mm F2.8 EX DG Macro is also available in Canon EF , Nikon F (FX), Pentax KAF and Sigma SA mounts.
Focal Range
Sony E 16-50mm F3.5-5.6 PZ OSS has a focal range of 16-50mm and
3.1X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
24-75mm when used on a APS-C / DX format camera.
On the other hand, the Sigma 70mm F2.8 EX DG Macro is a prime lens with fixed focal lenght of 70mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 105mm.
