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 D FA 150-450mm F4.5-5.6 ED DC AW 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 D FA 150-450mm F4.5-5.6 ED DC AW is the longer of the two lenses at 242mm. The Pentax FA 70-210mm F4 ED SDM WR with a length of 175mm, is 67mm shorter. Besides being longer, the Pentax D FA 150-450mm F4.5-5.6 ED DC AW also has a larger diameter of 95mm 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 1181g (59%) lighter than the Pentax D FA 150-450mm F4.5-5.6 ED DC AW which has a weight of 2000g.
Filter Threads
The Pentax FA 70-210mm F4 ED SDM WR has a filter size of 67mm whereas the Pentax D FA 150-450mm F4.5-5.6 ED DC AW has a 86mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Pentax FA 70-210mm F4 ED SDM WR:
And these are the 86mm filters that we recommend for the Pentax D FA 150-450mm F4.5-5.6 ED DC AW:
Lens Mounts
The Pentax FA 70-210mm F4 ED SDM WR has the Pentax KAF4 lens mount whereas the Pentax D FA 150-450mm F4.5-5.6 ED DC AW has the Pentax KAF3 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 Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF3 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 D FA 150-450mm F4.5-5.6 ED DC AW has a focal range of 150-450mm and 3.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 225 - 675mm.
