Nx16-50 ois lens disassembly

yul wrote:

Hello.
I recently bought an nx500 with a 16-50 kit lens and a 50-200. knowing that I mainly use this device with m42 while manual, and my fuji apsc for other work.
the 16-50 made cracking noises when I received it, with error 00, then it "unlocked" and works a priori correctly.
except that the focus is not done well, there is always a little blur, regardless of the parameters used, and even in manual focus, it's really not that.
also, I am dismantling it as seen above, I also removed the zoom motor. but I cannot remove the lens block, to see if there is not an off-center lens. could you tell me how to do it? I didn't find a screw on the front lens side, I can't remove the plastic or it says "16-50mm powerzoom".

Thanks for your help

I've had the 16-50pz lens down to its individual components before, and I don't suggest it. The lens consists of 3 parts, the body of the lens, the barrel of the lens which extends, and a piece that joins the two and moves with the barrel. It is prone to damage, as the assembly is plastic, and causes issues with lens not retracting, overextending, etc. The plastic channels that the lens moves within wear down from use (and never seem to have any grease left). I have a lens that is completely locked up right now that I used for parts, but I don't think I can get it apart to show you, and don't want to take apart my working lens again since it is a huge pain to line up the 3 pieces. Basically the middle piece has two channels, one for the body side and one for the extending barrel, and it rotates as the lens zooms, pushing itself away from the body, while also extending the barrel (which then comes back closer to the body at the long end). If you really want though I can try to take a quick video tonight showing how it works.