mark_roy1

<p><img src="http://farm8.staticflickr.com/7168/6672550167_5e8bbd45d7_o.jpg" alt="" width="850" height="567" /></p>

<p>"Unable to focus to infinity -now,that could be problematic"<br />Yes indeed it is. I have an older version - scalloped focusing ring, stops down to ƒ/32 - that will not reach infinity. Andy ideas how to adjust this??</p>

<p>Simple solution: shim the adapter using paper or thin metal shims to achieve exact infinity focus. The moon at night makes a decent test subject. Once this is done, your focus scale should be accurate.</p>

<p>The Nikkor-H is a beautiful lens, a Nikon version of the Summicron. I'm also a 'user' and have been known to modify lenses and cameras to that end, but all the same, it's a shame to butcher these old Nikkors when there are so many AI lenses around. <br /><br />Try to source a conversion ring. I managed to find three new old-stock AI Kit #3 conversions for early versions of the Nikkor-H. I converted three lenses, kept one as a 'user', and put the other two up for sale. Hopefully this means there will be at least two other shooters who won't want to hack into this simple, classic, high-performance lens. <br /><br />If you can't help yourself, and are intent on converting an early version of the Nikkor H, there's a trick to getting the old aperture ring off, with a tiny grub screw you can only access by removing the coupling prong and using the access hole underneath. Only then can you unscrew the retaining ring and remove the scalloped aperture ring. Construction was simplified in later models, which is another reason why these earlier versions are venerated. They are beautifully engineered masterpieces. If you can - leave them be!</p>