Hello everyone.
This is the first time I decide to start a new thread as I can't find any information about this problem.
I bought my 150-450 in january on digixo.com, a French Pentax authorized dealer.
Yesterday, the focus limiter switch on the barrel decided not to go to the "full" position anymore. It goes slightly past the 2-6m mark, but not all the way through the "full" position. When doing so, it looks like it is rotating clockwise a little bit, as if the right side was blocked by something.
Other switches work fine, the lens did'nt suffer any damage from me, never dropped nor shocked, etc. Always used with care.
What worries me even more is the lens won't focus past 6 meters anymore, even on the 6m-infinity position...
I can manually focus anywhere though.
Did anyone encounter this problem? I am hesitant to send it for warranty repair as I may not have it back before my next outing photographing newborn birds next month...
I will try to upload some pictures showing the problem.
Thanks for your input.
Last edited by pjsaure; 04-21-2018 at 02:30 AM.