Originally posted by Marc Sabatella Hmmm, I don't have either of those lenses (just the original 18-55 and the 18-55 II, plus the original 50-200), but something seems wrong with your OEM hood given your description. The hood should have fit the DA L, and I'd be shocked if it's supposed to require a 90 degree turn on the WR.
Originally posted by lowspark86 Didn't Pentax recently switch the model number of the hoods. The old was the PH-RBA52 (no longer available) and the newer is the PH-RBC52.
Is there any difference between them? Could explain why one rotates more than the other to lock on, although I have no idea how because I don't have the "C" model.
Still, it shouldn't be so tight as to break, but I had tight fitting "A" model on my 18-55mm II that loosened up after a couple days.
Ok, I just realized I also have an older 18-55 with the PH-RBA52 hood in my closet that I can compare to the PH-RBC52 hood. So I did
So here's the deal. They have two different connections, so the "A" hood won't fit on the WR lens and the "C" hood won't fit on the original kit lens. The WR/PH-RBC52 combo requires about 60-70 degrees of a turn to remove/mount it. The original kit lens/PH-RBA52 only requires about a 10-20 degree turn.