The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF 100-500mm 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 Canon RF 100-500mm with a length of 208mm, is 34mm 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 Canon RF 100-500mm's 94mm 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. Canon RF 100-500mm weighs 1365g, which means it is 635g (31%) lighter than the Pentax D FA 150-450mm F4.5-5.6 ED DC AW which has a weight of 2000g.
Filter Threads
The Canon RF 100-500mm has a filter size of 77mm 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 77mm filters that we recommend you to consider for the Canon RF 100-500mm:
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 Canon RF 100-500mm has the Canon RF 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 Canon R6 V, Canon R6 III and Canon C50 for the Canon RF Mount and Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF3 Mount.
Focal Range
Canon RF 100-500mm has a focal range of 100-500mm and
5.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
160 - 800mm.
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.
