paolo_servadei

<p>Yes, you're right, i gave a second look to the page on mflenses forum, and i have seen the screws.<br> There are no radial screws, as i expected, but axial :)<br> Thank you.</p> <p>cheers<br> Paolo</p>

<p>Unfortunately the M42 version is different :(<br /> I expected something like that, but there are no external screws.<br /> Maybe the screws are accessible only removing the back mount...<br /><img src="http://i.imgur.com/xQRJY5I.jpg" alt="" width="224" height="359" /><br> cheers<br /> Paolo</p>

<p>I have a wonderful Pentacon auto MC f/2,8 135mm, with clean barrel, responsive diaphragm, spotless glasses... but the focusing ring slips :(<br> I couldn't find the screw/s i should tighten.<br> If i clamp the ring between my fingers with a lot of strenght, ovalizing it a little, i can focus, and i feel that the helicoid underneath works smoothly. It is just the focusing ring that is not properly fixed to the part under it.<br> Any clue?<br> I found a video on Youtube, but it was of no help.<br> Thanks in advance</p> <p>cheers<br> Paolo</p>