I recommend the upgrade to 55-300 PLM. It is closer in size (when retracted) to the 18-135 than it is to the HD 55-300 - VERY compact. Auto focus is night and day difference (lightning fast, does not hunt) from the HD version! IQ is somewhat better in my experience. I had DAL version then upgraded to HD WR when it came out, then upgraded to PLM when it came out. Well worth the upgrade! One of my favorite lenses. I have 60-250 which is better optically but it is a beast in comparison and MUCH slower to focus.
---------- Post added 02-05-22 at 04:22 PM ----------
Originally posted by davidvcd my 16-50mm not working anymore
What a great opportunity! It seems to me that the the K-3 iii begs to be paired with the PLM 16-50. I almost bought them both recently, but upgraded to full frame (K-1ii w/ 28-105) instead. I still want a K-3iii but want the 16-50 PLM with it to take full advantage of AF capability. If it were me I would try to have both 16-50 PLM and 55-300 PLM. My 2 cents.