ebogaerts Posted August 12, 2006 Share Posted August 12, 2006 I recently got ahold of a 105mm f/2.8 AIS micro - wonderful lens. The silver locking knob, however, does not really lock the focusing ring. It only causes a slight amount of resistance when tightened down. Is this something that can be repaired? And if so, is it costly? Link to comment Share on other sites More sharing options...
dan_fromm2 Posted August 12, 2006 Share Posted August 12, 2006 That's how they are. Useful as teats on a boar hog. Stop your whining. Cheers, Dan Link to comment Share on other sites More sharing options...
alan_olander1664878205 Posted August 12, 2006 Share Posted August 12, 2006 The locking knob on the 105mm f/2.8 AIS Micro that I used to own worked just like yours, not very well. I believe that they are all like this. The locking knob on the 105mm f/4 Micro that I have now works quite well, however. Link to comment Share on other sites More sharing options...
ebogaerts Posted August 12, 2006 Author Share Posted August 12, 2006 Ah, I thought that this was a defect, or something was worn out. Good to know. And oh, Dan, no whining involved - just a simple question. :) Link to comment Share on other sites More sharing options...
eajames Posted August 13, 2006 Share Posted August 13, 2006 Yeah, why should you have the only one that works! Perhaps you know about the performance of this lens at infinity - if not, I'm sure you'll be pleased when you give it a try! Eric James www.purebredmutt.net Link to comment Share on other sites More sharing options...
david_h._hartman Posted August 13, 2006 Share Posted August 13, 2006 Eric,<br> <br> The locking knob should work as you describe or perhaps a little better but dont expect a positive lock. I removed mine from my 105/2.8 AIS and stored it in case I ever sell the lens. I covered the holes with a small pieced of Dymo label tape (old embossed type) to keep dust out.<br> <br> I had a concern that aluminum shards might get into the helicoid and mess it up. The lock knob also tore up the foal lining in the camera cases I used at the time. My lens does not creep when on a tripod so have no need for the lock.<br> <br> Best,<br> <br> Dave Hartman. Link to comment Share on other sites More sharing options...
ebogaerts Posted August 13, 2006 Author Share Posted August 13, 2006 Hi Eric - yeah I've read that the performance is really nice @ infinity. Unfortunately it'll have to compete with my 105mm DC for non-macro useage. :) Thanks for the bit of advice, David. I think I have a small roll of Dymo in the house. Link to comment Share on other sites More sharing options...
roland_vink Posted August 13, 2006 Share Posted August 13, 2006 The earlier AIS 105/4 macro has a fully functional locking knob - I rarely use it and it sometimes get locked when I don't need it. Maybe that's why the locking knob on the AIS 105/2.8 micro is only partially functional. I think it needs a modification at a Nikon serice agent to make it fully functional, assuming you need it. Link to comment Share on other sites More sharing options...
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