The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Nikon Z 14-30mm F4 S and the Pentax 17-70mm F4.0 AL SDM 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. Pentax 17-70mm F4.0 AL SDM is the longer of the two lenses at 94mm. The Nikon Z 14-30mm F4 S with a length of 85mm, is 9mm shorter. On the other hand, the Nikon Z 14-30mm F4 S has a larger diameter of 89mm compared to the Pentax 17-70mm F4.0 AL SDM's 75mm 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.
Filter Threads
The Nikon Z 14-30mm F4 S has a filter size of 82mm whereas the Pentax 17-70mm F4.0 AL SDM has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 82mm filters that we recommend you to consider for the Nikon Z 14-30mm F4 S:
And these are the 67mm filters that we recommend for the Pentax 17-70mm F4.0 AL SDM:
Lens Mounts
The Nikon Z 14-30mm F4 S has the Nikon Z lens mount whereas the Pentax 17-70mm F4.0 AL SDM has the Pentax KAF3 lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon ZR, Nikon Z5 II and RED Komodo-X 6K Z for the Nikon Z Mount and , and for the Pentax KAF3 Mount.
Focal Range
Nikon Z 14-30mm F4 S has a focal range of 14-30mm and
2.1X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
21 - 45mm.
On the other hand, the Pentax 17-70mm F4.0 AL SDM has a focal range of 17-70mm and 4.1X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 25.5-105mm when used on a APS-C / DX format camera.
