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Bullet308
Tinkerer
Username: Bullet308
Post Number: 3
Registered: 08-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, May 20, 2007 - 06:25 pm: | 
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Okay, so here is the deal...I sold this FA 1.7 50mm to a guy, and he sends me a picture saying that it arrived like this:
http://img.photobucket.com/albums/v642/bullet308/IMGP2264.jpg
Not good. So, I have him send it back, and find it to be jammed solid, no way to move the objective in or out. I take it apart trying to fix it, and that process looks something like this:
http://img.photobucket.com/albums/v642/bullet308/DSCF3206.jpg
http://img.photobucket.com/albums/v642/bullet308/DSCF3207.jpg
http://img.photobucket.com/albums/v642/bullet308/DSCF3208.jpg
http://img.photobucket.com/albums/v642/bullet308/DSCF3210.jpg
http://img.photobucket.com/albums/v642/bullet308/DSCF3209.jpg
http://img.photobucket.com/albums/v642/bullet308/DSCF3211.jpg
This is how far I got before I could not figure out how to strip it any further. How do I get the objective out of this puppy?
TIA
-Tom |
Docman
Tinkerer
Username: Docman
Post Number: 11
Registered: 03-2007
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, June 12, 2007 - 11:37 am: |
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looks like it took a hard fall.
You should have chosen a more solid & cushioned package.
I'm afraid the problem you have with your lens requires some professional attention. It involves removing the front part of the lens, evaluating the damage (best case: a broken af driveshaft plastic gear, worst case: cracked front lens assembly), recentering the assembly and recollimating.
Not an easy task, especially if you don't have the proper tools (judging from your screwdriver set in the photos).
Sorry to give you the bad news.
To give you an idea of the complexity, here's a diagram of a modern af lens:
http://www.pentax-manuals.com/manuals/service/77mm_parts.pdf
(pass: Pentax) |
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