Why not buy a cheap "ugly" or "as is" lens from KEH and remove the aperture ring and properly ai it or send it to John White for a nice ai conversion? I have a beautiful non-ai late made with rubber focus ring that I'll either replace the aperture ring or have John modify it. Mark
That is a very sharp idea. The actual swap, ring for ring, looks very easy for most lenses.
Another thing I wonder is where a thorough ring/kit matrix chart is, on the web? I have seen lists of lenses naming the correct AI conversion-kit, but I'll bet some of those kits (at least) will work correctly on more than one lens. Just must have the same aperture range, diameter, thickness, and depth. It would be great to find this info (I have looked without success, so far), given the very limited and shrinking supply of conversion kits.
The KEH 'as-is' route is also a good idea, but for some lenses, like my 55/1.2 Nikkor-S, even KEH's lowest grade is pricey, for the single part (which renders the donor lens useless).
>Why not buy a cheap "ugly" or "as is" >lens from KEH and remove the aperture ring and properly ai it >or send it to John White for a nice ai conversion? I have a >beautiful non-ai late made with rubber focus ring that I'll >either replace the aperture ring or have John modify it. >Mark
Frequently, Nikon moves the metal tab on the barrel for the click stops to prevent people from using an aperture ring meant for a 35/1.4 Nikkor-N on a 50/1.4 Nikkor-S. Then, you also have situations where multiple rings are available for one lens run.
>>I think I'd pay John White to do it after seeing those >>images. > >I am looking to have some vintage lenses modified to work on a >D600. Where can a Canadian get this done? Mr White? If so, >how do I get in touch with him? > >Thanks so much
One note about your conversion; you've cut away only a short arc. You will have difficulty mounting and could damage the camera if the lens is set to certain apertures when you mount, be careful.
As it is now the lens would need to be at or near maximum aperture when mounted to avoid damaging the body. A proper conversion will cut away enough of an arc so that the bodies AI tab it not touched during mounting regardless of what aperture is set.