The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Pentax-D FA 85mm F1.4 ED SDM AW and the Canon RF 85mm F2 Macro IS STM 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 85mm F1.4 ED SDM AW is the longer of the two lenses at 124mm. The Canon RF 85mm F2 Macro IS STM with a length of 91mm, is 33mm shorter. Besides being longer, the Pentax-D FA 85mm F1.4 ED SDM AW also has a larger diameter of 95mm compared to the Canon RF 85mm F2 Macro IS STM's 78mm diameter.
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Below you can find a scaled side-by-side image of Pentax-D FA 85mm F1.4 ED SDM AW and Canon RF 85mm F2 Macro IS STM to get a better idea of how their sizes compare in real life.
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 85mm F2 Macro IS STM weighs 500g, 60% (755g) lighter than the Pentax-D FA 85mm F1.4 ED SDM AW's weight of 1255g.
Filter Threads
The Pentax-D FA 85mm F1.4 ED SDM AW has a filter size of 82mm whereas the Canon RF 85mm F2 Macro IS STM 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 Pentax-D FA 85mm F1.4 ED SDM AW:
And these are the 67mm filters that we recommend for the Canon RF 85mm F2 Macro IS STM:
Lens Mounts
The Pentax-D FA 85mm F1.4 ED SDM AW has the Pentax KAF4 lens mount whereas the Canon RF 85mm F2 Macro IS STM has the Canon RF lens mount. Some of the latest released cameras that are compatible with these mounts are , and for the Pentax KAF4 Mount and Canon R100, Canon R8 and Canon R50 for the Canon RF Mount.
Focal Range
Both lenses have the same focal range of
85mm but while Pentax-D FA 85mm F1.4 ED SDM AW has the fastest aperture of
F1.4, the Canon RF 85mm F2 Macro IS STM's widest aperture value is
F2.