The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony E 16-70mm F4 ZA OSS and the PENTAX28-105mm F3.5-5.6 WR 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. PENTAX28-105mm F3.5-5.6 WR is the longer of the two lenses at 87mm. The Sony E 16-70mm F4 ZA OSS with a length of 75mm, is 12mm shorter. Besides being longer, the PENTAX28-105mm F3.5-5.6 WR also has a larger diameter of 73mm compared to the Sony E 16-70mm F4 ZA OSS's 67mm diameter.
Below you can find a scaled side-by-side image of Sony E 16-70mm F4 ZA OSS and PENTAX28-105mm F3.5-5.6 WR to get a better idea of how their sizes compare in real life.
Comparison image of the Sony E 16-70mm F4 ZA OSS and the PENTAX28-105mm F3.5-5.6 WR Size and Weight 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 16-70mm F4 ZA OSS weighs 308g, which means it is 132g (30%) lighter than the PENTAX28-105mm F3.5-5.6 WR which has a weight of 440g.
Filter Threads
The Sony E 16-70mm F4 ZA OSS has a filter size of 55mm whereas the PENTAX28-105mm F3.5-5.6 WR has a 62mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 55mm filters that we recommend you to consider for the Sony E 16-70mm F4 ZA OSS:
And these are the 62mm filters that we recommend for the PENTAX28-105mm F3.5-5.6 WR:
Lens Mounts
The Sony E 16-70mm F4 ZA OSS has the Sony E lens mount whereas the PENTAX28-105mm F3.5-5.6 WR has the Pentax KAF3 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 Pentax K-3 III Mono , Pentax KF and Pentax K-3 III for the Pentax KAF3 Mount.
Focal Range
Sony E 16-70mm F4 ZA OSS has a focal range of 16-70mm and
4.4X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
24-105mm when used on a APS-C / DX format camera.
On the other hand, the PENTAX28-105mm F3.5-5.6 WR has a focal range of 28-105mm and 3.8X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 42 - 157.5mm .
