I bought a plain prism F with 5.8cm F/1.4 lens recently, which I love. Both body and lens were a little rough, but I have fixed up what I need to as far as making them useable again.
However, in the bag with these, and included in the $100 cost, was a Auto Nikkor 8.5-25cm f/4-4.5, the original version with the scalloped metal focusing ring. From my research, this is a fairly uncommon lens, being only produced for a short while before modifications were made.
Unfortunately, the glass is in an awful state! It has probably the worst case of fungus I have come across, and I do not trust myself with dismantling and cleaning it as I would with a fixed focal length lens. Looking at the condition of the elements, even a cleaning may not be enough to save this lens, but I hate the idea of just throwing it out, or leaving it as it is. The body of the lens is also a little rough, but serviceable.
Just wondering what others may do in this situation. If it were a common lens, I would just bin it as it cost me effectively nothing, but am finding that hard to do with this lens.
#1. "RE: Rare-ish lens dilemma." | In response to Reply # 0Leonard62 Nikonian since 15th Mar 2009Mon 30-Sep-13 08:01 PM
I collect and treasure all my manual focus Nikon lenses. The 5.8cm f1.4 is also one of my favorites. I refuse to have it chopped up to use on my high end digital bodies so I use it on my D3200 and D5100 bodies which can accept the lens without creating damage. I especially like the very old lenses and enjoy seeing how they fare on these bodies.
But when it comes to a bad case of fungus I would wrap it in plastic and put it in the trash. It would have to be an extremely rare and expensive lens for me to consider getting it fixed. In most cases it would require getting the lens elements ground, polished and re-coated for it to be usable. Even though the 8.5 to 25cm may be rare I don't think it would fall into that category.
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#2. "RE: Rare-ish lens dilemma." | In response to Reply # 0mjt73106 Registered since 24th Mar 2013Wed 02-Oct-13 12:12 AM
Getting an estimate to restore the lens seems reasonable. No harm in letting someone take a look at it and see what it would take to repair it.
Since I cannot really see the issue, I do not feel that I can give you true advice. However, you may find that the lens is beyond repair or restoration or can be repaired with nominal cost. The real value of the lens is what you feel it is worth.