A while back I mentioned that my main workhorse lens - a Pentax A* (star) 200mm f4 ED - had stopped working. I sent it to Pentax Repair, who were unable to repair it due to a lack of parts., and so they returned it as it was.
Enter Eric Hendrickson at pentaxs.com… He disassembled the lens and, determined that it was essentially worn out A crucial part that operated the aperture blades had several hole worn out of round, and it was the primary reason why the aperture mechanism was no longer functioning correctly. But the lens. This lens has seen heavy use since I bought it new in 1998, and that use had caught up with it. In addition, several internal screws had simply worked their way loose over the years, making disassembly of the lens a real problem.
Since parts were not available Eric found somebody who could fabricate the worn out piece. There was no guarantee that it would work but I was willing to pay up front on the hope that it would. A few weeks later the lens arrived and is working like new! The shots in this post were taken with the repaired lens - it is meting accurately and the aperture blades are running smoothly! Since there is no longer any 200mm class macro lens made for Pentax, it was well worth the repair. All in all, the repair cost less than half of the only close match to the 200mm macro - which as of this writing is still not available.
Eric proved to be a great resource and I have more stuff to send his way. He can be reached at email@example.com.
And just a few more photos …
Comment from: Ian Macdonald Visitor
These are absolutely wonderful pictures! You must have taken a lot of time to get them