Have you ever fixed a broken lens before???

blastman

blastman

blastman

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hey all,

I went out with Slothmeister last night and after I'd taken a few shots with another friends Canon 17-40mm that he lent me, I pulled my Tamron 17-200mm lens out my bag and fixed it to my camera. I went to zoom in on a container ship but to my dismay I found that turning the outer-casing did nothing!! No movement from the lens at all!!!

I spent the rest of the evening hating my-self for buying a cheap lens of the bay. I spent £28 on it and ever since I brought it the AF had never worked. I thought that the lens wasn't completely compatible with my 450D.

Anyway, I got to work today and decided that I'd open the blasted thing up and see whats what. (If it was already broken I had nothing to lose.)

I found that where there should have been 2 screws connecting the outer casing to the internal mechanics they where none!!

I then pulled apart an old DVD drive I had laying around and found 2 screws that would fit. I also noticed that the small rubber band that goes round the AF motor had come off one of the pulleys I fitted the screws and put the band back on the pulley and Jimmy's you're mothers brother it worked!!

What a result!!

Has anyone else tried fixing a lens like this?? Any joy with it?? Lets hear some success and horror stories....

:)
 
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Good job. Thankfully, apart from cleaning sensors and things, I've never had to do anything more involved :D. Have you tested it all properly with a focus chart?
 
Arh yes. Thanks.

I'm at work so don't a tripod and the lens doesn't have IS. I've given it a bash and all seems ok.

I'll do it again when I get home, just to be sure... :)

Cheers again.
 
I knocked my niffty fifty and the lens would not focus and looked on the wonk a friend came round and he said lets have look,he gave it a quick sharp tap on my coffee table and is a good en,well happy was just about to bin it.
 
.one. said:
I knocked my niffty fifty and the lens would not focus and looked on the wonk a friend came round and he said lets have look,he gave it a quick sharp tap on my coffee table and is a good en,well happy was just about to bin it.
Click to expand...

Jay ?

I bought a Sigma 18-50 2.8 from the bay for £15.00 because the barrel was loose and managed to get it to bits and found out it had come out of its track. Clip it back in and it worked fine.
 
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.one. said:
I knocked my niffty fifty and the lens would not focus and looked on the wonk a friend came round and he said lets have look,he gave it a quick sharp tap on my coffee table and is a good en,well happy was just about to bin it.
Click to expand...

That was a stroke of luck. He could have easily balls it up completely!!

but hey, if it works, it works!! :)
 
Fixed my Pentacon f/1.8 50mm when the screws holding the focus ring had come loose and let it slide round without moving the elements. Getting it apart was easy but getting it back together properly (and calibrated) wasn't!

All works now afaik although I've not had a roll of film processed yet so fingers crossed I didn't screw something up inside of it ;)
 
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