jung_kook_paik Posted September 13, 2006 Share Posted September 13, 2006 I've recently purchased this lense. It is cosmetically and optically perfect, but I hear a kind of small clinking noise when I shake the lense. Perhaps something got loose internally. Is it normal for this lens? Otherwise, I have to return it. Thanks. Link to comment Share on other sites More sharing options...
Michael R Freeman Posted September 13, 2006 Share Posted September 13, 2006 Normal. I suspect it is the slight mechanical play in the aperture stopdown lever and diaphragm assembly that you are hearing. Set the aperture to f/32 and you will see there is a little bit of free movement in the stop down linkage. If you put your finger on the lever and shake - no noise. Take your finger off and shake - clink, clink. Link to comment Share on other sites More sharing options...
icuneko Posted September 13, 2006 Share Posted September 13, 2006 Don't shake the lens. ;) Link to comment Share on other sites More sharing options...
michaelging Posted September 13, 2006 Share Posted September 13, 2006 All nikon lenses rattle when they are not on a camera. The lever that stops down the lens moves freely. Link to comment Share on other sites More sharing options...
david_h._hartman Posted September 14, 2006 Share Posted September 14, 2006 Jung-Kook,<br> <br> Ill double check later today but Im totally sure this is normal. I cant think what to call it but the device making the noise rides on 6 dry ball bearings. It needs to be loose to function in a motor driven camera at 8 fps. Its part of the aperture control linkage. I've owned a 55/2.8 AIS Micro-Nikkor since its introduction.<br> <br> Regards,<br> <br> Dave Hartman. Link to comment Share on other sites More sharing options...
jung_kook_paik Posted September 14, 2006 Author Share Posted September 14, 2006 Dear Hartman and Ging, Thanks for your kind answers. I found that the clinking sound has to do with the movement of the stopdown lever. I just want to add that when the aperture is at 2.8, the lever moves freely, and when it is at 32, the lever gets resilient and does not seem to move much, but I still hear "clinking," even when the lens on a camera. My other Nikon AIS lens (i.e.: 50mm and 135mm) don't have this kind of problem(?): in these lenses, the lever doesn't move at all at maximum aperture, and gets very resilient at minimum aperture. Thanks. Best, J.K. Paik Link to comment Share on other sites More sharing options...
david_h._hartman Posted September 16, 2006 Share Posted September 16, 2006 I remembered and now Ive double checked my 55/2.8 AIS Micro. I compared it to my 55/3.5 AI Micro. The aperture stop down lever in the 55/2.8 AIS Micro is not spring loaded and therefor can rattle since it floats freely on dry ball bearings. There is spring loading deeper in the lens to close the aperture blades. The function of the aperture stop down lever is to hold the lens aperture open until an exposure or the DOF preview button is pushed. The name seems reversed considering its function but this is name give at Photography in Malaysia. Its probably official Nikon terminology. In the case of the 55/3.5 the spring loading that stops down the aperture is applied to the aperture stop down lever itself (OK, that makes more sense) so the lens, like most other Nikkor lenses doesnt have an apparent rattle like that of the 55/2.8 AIS Micro.<br> <br> All is well that end well, yes? I do hope this makes sense as Im really tired. Anyway I checked and the 55/2.8 AIS rattles as I was sure it would. You get to ignoring this when you uses the lens. The 55/2.8 is one of my favorite lenses.<br> <br> I'm a fool for these lenses. I own four 55mm Micro-Nikkors and a 60/2.8 AF Micro-Nikkor among other Micro-Nikkors.<br> <br> Best,<br> <br> Dave Hartman.<br> <br> NAS is not evil; NAS is good (sm). Link to comment Share on other sites More sharing options...
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