The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Pentax FA 70-210mm F4 ED SDM WR and the Nikon 70-200mm f4G ED VR 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. Nikon 70-200mm f4G ED VR is the longer of the two lenses at 179mm. The Pentax FA 70-210mm F4 ED SDM WR with a length of 175mm, is 4mm shorter. On the other hand, the Pentax FA 70-210mm F4 ED SDM WR has a larger diameter of 79mm compared to the Nikon 70-200mm f4G ED VR's 78mm 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. Pentax FA 70-210mm F4 ED SDM WR weighs 819g, which means it is 31g (3%) lighter than the Nikon 70-200mm f4G ED VR which has a weight of 850g.
Filter Threads
Both the Pentax FA 70-210mm F4 ED SDM WR and the Nikon 70-200mm f4G ED VR have the same Filter thread size of 67mm.
Below are links to the 67mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Pentax FA 70-210mm F4 ED SDM WR has the Pentax KAF4 lens mount whereas the Nikon 70-200mm f4G ED VR has the Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with these mounts are Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF4 Mount and Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount.
Focal Range
Pentax FA 70-210mm F4 ED SDM WR has a focal range of 70-210mm and
3.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
105-315mm when used on a APS-C / DX format camera.
On the other hand, the Nikon 70-200mm f4G ED VR has a focal range of 70-200mm and 2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 105 - 300mm.