Perhaps one of the most practical aspects of these lenses' updates will be the SP coating against grime, etc. All in all, a good move by Pentax.
---------- Post added 02-28-21 at 03:52 PM ----------
Originally posted by Rondec but it does flare some and if HD coatings reduce that, it would be a benefit.
I guess we will see some comparative testing down the road to find out. One thing that will not change is the FA 31mm Ltd having quite a bit of vignetting wide open when used on the K-1 or other FF body. This aspect did not show up in previous lab tests, as these were done on APS-C bodies. After acquiring the K-1 II and this lens, I found out about this issue quite easily on my own. The good news is, the light falloff situation diminishes rapidly upon stopping down some.