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DPChallenge Forums >> Tips, Tricks, and Q&A >> Dropped my 50mm 1.4
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08/28/2005 11:27:37 AM · #1
I dropped my 50mm Canon from about 3 feet. It landed on it side and now will not focus correctly. When I focus to the closest distance it sticks.

What do I do??

I am a very handy guy do I try and pull it apart myself. Do I take it to canon to fi it or will getting it fixed cost more then the lens.

Any help or experience would be appreciated.
08/28/2005 11:31:56 AM · #2
sending it to Canon will cost good money, but probley not as much as the lens brand new.

Sorry to hear that. It kills me.

Being careful is a prime concern of mine, and I am sure yours too. Sometimes gravity just takes over.

Good luck.
08/28/2005 12:04:54 PM · #3
Can you place the lens on a tabletop and ROLL it? In other words, is it deformed? If it is deformed, you MIGHT be able to open it up and re-form the shell. I did it once on a Nikon lens, many years ago. But honestly, the lenses were simpler in those days. I really don't recommend it. You can send it to Canon and ask for an estimate, then make your decision.

R.
08/28/2005 12:10:13 PM · #4


Originally posted by bear_music:

Can you place the lens on a tabletop and ROLL it? In other words, is it deformed?

R.


The lens looks unharmed. No scraps, marks, nothing.
It fell out of my suit pocket at a wedding. Fell about 3 feet and bounced on it side, but I had the hood on backwards and that kinda protected it.

08/28/2005 12:10:35 PM · #5
well uhm now you can practice manual focusing. ^^
08/28/2005 12:12:17 PM · #6
Originally posted by lucas:

well uhm now you can practice manual focusing. ^^


Even when I manual focus it still sticks on on end of the focus. I have to turn the manual focus ring a couple time before it moves. Then it works great throught the rest of the scale.
08/28/2005 12:20:53 PM · #7
how do the pics look from it now? if its just a pain in the ass to focus, but still takes good pics, then maybe not worth fixing? maybe it'll loosen itself up over time
08/28/2005 12:22:29 PM · #8
Originally posted by saintaugust:

how do the pics look from it now? if its just a pain in the ass to focus, but still takes good pics, then maybe not worth fixing? maybe it'll loosen itself up over time


Looks like it is back focusing a bit when shooting in auto fine in manual.

I think I'm going to call canon and see how much.

Has anyone taken apart a lens before?
08/28/2005 12:23:38 PM · #9
Originally posted by Corwyn:

Originally posted by lucas:

well uhm now you can practice manual focusing. ^^


Even when I manual focus it still sticks on on end of the focus. I have to turn the manual focus ring a couple time before it moves. Then it works great throught the rest of the scale.


I'd guess that something got deformed, either out of round or a dent, that is restricting the focusing enough that the motor can't make it through. I'd bet money that simply running it through it's paces enough times will work it free eventually. It's worth a shot.

If you do take it apart, look for the places where that paint is rubbed off or worn, that's where it's hitting. Clean off the lube put on by the factory, blend the area with steel wool, make sure it's clean, and wipe with a teflon lubricant before reassembling. I'd guess sending it in to be repaired could cost as much as a new lens.
08/28/2005 12:41:34 PM · #10
The 50/1.4 has an extendign front element, and if this is hit, it could mess up the focus. If it is backfocusing now whenon AF, that's a pretty sure sign that there's some interal misalignment. It needs service.
08/28/2005 12:45:50 PM · #11
Agreed; sticky focus may be fixable by you, but internal alignment to correct the backfocus is not. Send it in for an estimate.

And to answer your question, yes; I've taken lenses apart a number of times. Usually to clean crap out of them after they got exposed to inclement conditions, and once (like I said earlier) to smooth out a slight ding.

R.

Message edited by author 2005-08-28 12:46:06.
08/28/2005 01:00:33 PM · #12
Is your camera equipment insured?

If not, this might be a good time to change that. It won't help for the damage already done, but would be good to do in case the problem happens again.

-Terry
08/29/2005 02:57:53 PM · #13
Yes all my equipment is insured. I have up to $25,000.00 in coverage and $1,000,000.00 in liability. $10,000.00 on rental equipment and complete North American coverage. Cost me about $80 a month. The insurance I have will only replace my equipment with current lenses (if I have a lens thatís 3 years old they will replace it with a current model). Good in my case but bad if I had some old cool lenses.

I call canon today and they directed me to a repair center near me. I went this afternoon on my lunch hour and the technician told me it should be covered under the warranty. I think he is letting it go because there are no external blemishes. He even asked me if it was new (as in did I get it this way). I told him it is only a couple months old and I hadnít used it that much. I have taken about 2000 pics with it but tend to keep my stuff mint.

Thanks for all you help.

Corwyn

08/30/2005 04:14:38 PM · #14
Just an update....

Lens is already fixed and paid for in full be Canon.

I pick it up tonight.
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