Nikkor-Q 135mm f2.8 Camera Lens Ai'd Mount Nikon Ai Factory Converted

[joel_b.1]

<p>I've tried to find this information via Google, I promise, but I got confused trying to get a clear answer. I'm looking at a "Nikkor-Q 135mm f2.8 Camera Lens Ai'd Mount Nikon Ai Factory Converted" on Fleabay but I want to be sure: will this work on a contemporary DSLR (D800)? Thanks for your help. </p>

[michael_bradtke]

<p>If it has been factory AI modified it will work on your camera. If there are photos of the lens look at the coupling prong. If it has cut outs in it and small numbers behind it it has been modified</p>

[joel_b.1]

<p>Many thanks. </p>

[jon_porter]

<p>A "factory" AI job was actually done by Nikon's service centers, which in the U.S. was EPOI (predecessor of NikonUSA). An AI CONVERSION involves changing the aperture ring. An AI MODIFICATION means the old aperture ring has been cut back. Some of these "chop jobs" are done better than others but typically they all work. A Nikon-converted lens looks better, though, so generally sells for a little more.</p>

[paul_k1664875007]

<p>There has been a thread on Photonet in which it's explained in detail what this conversion means and more importantly how you can see/inspect that it has actually been performed<br>

http://www.photo.net/nikon-camera-forum/00V6PK<br>

<br />HTH</p>

 

[Matthew Currie]

<p>I've home converted a couple of lenses, and it does work fine if you do it carefully, but on the proper AI ring the meter claw is mounted in reverse of the original, with the base forward instead of back, and of course it has the second set of numbers properly printed. A home conversion cuts into the base of the original claw right up to the mounting screws, and is never quite as nice looking as the replacement ring even if it's neatly done, though it's less obvious if you don't need to leave the claw on. </p>

[keith_b1]

<p>The 135/2.8 Q.C is better...the "C" means multi-coated to improve color/reduce flare.</p>

[joel_b.1]

<p>Thanks everyone. I got the lens on fleabay for $31 -- mostly I just wanted to test out this focal length, which I've never used, and I figured this was a pretty inexpensive way to try it. Thanks again.</p>

[JDMvW]

<p>As a "purist" I will never convert any of my old non-AI lenses (<a href="/nikon-camera-forum/00aPpw">link</a>), but I hear conversions done by White ( http://www.aiconversions.com ) are just fine. He also has compatibility tables, etc. at that link.</p>