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 Pentax DA 60-250mm F4.0 ED 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 FA 70-210mm F4 ED SDM WR is the longer of the two lenses at 175mm. The Pentax DA 60-250mm F4.0 ED with a length of 168mm, is 7mm shorter. On the other hand, the Pentax DA 60-250mm F4.0 ED has a larger diameter of 82mm compared to the Pentax FA 70-210mm F4 ED SDM WR's 79mm 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 221g (21%) lighter than the Pentax DA 60-250mm F4.0 ED which has a weight of 1040g.
Filter Threads
Both the Pentax FA 70-210mm F4 ED SDM WR and the Pentax DA 60-250mm F4.0 ED 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 Pentax DA 60-250mm F4.0 ED has the Pentax KAF2 lens mount. Some of the latest released cameras that are compatible with these mounts are Pentax K-3 III Monochrome, Pentax KF and Pentax K-3 III for the Pentax KAF4 Mount and , and for the Pentax KAF2 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 Pentax DA 60-250mm F4.0 ED has a focal range of 60-250mm and 4.2X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 90-375mm when used on a APS-C / DX format camera.