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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 30 Jan 2014 (Thursday) 13:26
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EF50 1.4 USM AF Problem

 
Airedale1
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Jan 30, 2014 13:26 |  #1

I love my 50 1.4 USM, problem is though that it no longer will AF. I have tried it on both my 40D and on my 7D. What might the problem be? Is best route to send it into Canon? How much would it cost to fix? Is there anything else I should be trying to do? Any help would be greatly appreciated. I consider it a valued part of my kit.

Image below was taken before the problem started with 20D and EF50 1.4 USM in Av mode, ISO 200, 1/200 sec, f/2.0

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MalVeauX
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Jan 30, 2014 14:12 |  #2

Heya,

If you search, this is a problem that comes up with the 50mm F1.4 often. If you bumped the front of the lens, it sometimes knocks out the autofocus. Repair would cost too much to bother with, considering a new one is only $300. I think there is a self-repair method, not sure if you're into that.

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Sirrith
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Jan 30, 2014 19:17 |  #3

This is a known issue with the lens, unfortunately. Repairs cost around $150. Best way to prevent it seems to be babying the lens: no bumping the front part that extends, switching to MF before storage etc...

Alternatively, wait for the new Sigma 50 Art to be released. It will be very soon, and it will be much better optically than your current 50. Although price-wise it will cost more.


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InfiniteDivide
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Jan 30, 2014 20:25 |  #4

Sorry to hear about your troubles. Perhaps I should sell mine. I take great care of all my lenses,
but if it is a common problem with the lens... :(


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pdrober2
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Jan 30, 2014 21:49 |  #5

if you are brave, there are some videos on youtube on how to fix it.

i had a broken one a while back, like yours. I sold it on ebay for close to $200. i listed the problem with and stated it wasnt functional and was sold as-is for repairs or parts. it sold within a few hours.


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Thorrulz
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Jan 31, 2014 09:35 |  #6

First off, nice picture and optics. If it were me I would look into repairing the lens since it would still be cheaper than buying new.


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4100xpb
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Jan 31, 2014 13:02 |  #7

I just had mine fixed at Canon Canada. Flat rate $99 repair plus shipping and taxes - was about $140 all in. Canon USA's repair rate appears to be $120, I presume you'll need to pay shipping both ways there too.

It's a common problem, so I'm sure Canon will be able to fix it. So the question is do you want to
1. Pay $150 to fix it
2. Buy a used one for ~$300
3. Buy a new one for $400
4. Say screw it and ditch the lens.

Note for options 2-4 you could sell your non-working lens - they're still worth a decent amount as per pdrober2 above. Good luck whatever way you go.




  
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Airedale1
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Jan 31, 2014 21:34 |  #8

pdrober2 wrote in post #16651567 (external link)
i had a broken one a while back, like yours. I sold it on ebay for close to $200. i listed the problem with and stated it wasnt functional and was sold as-is for repairs or parts. it sold within a few hours.

Thank you one and all for the excellent advice; If as prober2 has said and I am able to get $200.00 for my lens as is and as a new one is $339.00 which would then cost me $139.00 for a brand new lens; would that not be the best course of action?


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Sirrith
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Jan 31, 2014 23:44 |  #9

Airedale1 wrote in post #16654152 (external link)
Thank you one and all for the excellent advice; If as prober2 has said and I am able to get $200.00 for my lens as is and as a new one is $339.00 which would then cost me $139.00 for a brand new lens; would that not be the best course of action?

Like I said, wait and see what the new Sigma is like price and performance wise first :)
Even if you do get a new one for $339, there's no guarantee it won't happen again since this is an inherent design flaw of the current EF 50/1.4.


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Thorrulz
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Feb 01, 2014 01:27 |  #10

Airedale1 wrote in post #16654152 (external link)
Thank you one and all for the excellent advice; If as prober2 has said and I am able to get $200.00 for my lens as is and as a new one is $339.00 which would then cost me $139.00 for a brand new lens; would that not be the best course of action?

You may or may not get the $200 for the 50 f1.4 as is, but if you like the optics in the one you currently have then I'm with the keep and repair argument.


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My sister, the professional baker and cake decorator once told me that my camera takes great pics. My reply was that I thought her oven baked great cakes.:lol:

  
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EF50 1.4 USM AF Problem
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