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Author Topic: I Repaired my own 50mm 1.4, and so can you!  (Read 8518 times)

Emil

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I Repaired my own 50mm 1.4, and so can you!
« on: September 05, 2013, 03:44:16 PM »
My trusty 50mm 1.4 stopped focusing the other day, and I couldn't even focus manually by turning the ring. I googled the issue and found that many others had experienced the same thing. I never dropped my lens or anything. It seems that all it takes is a bit of pressure on the front focusing element, and a metal part inside will get bent. This can cause the focus mechanism to get stuck.

I got a lot of help from following this guide:
http://image23photographic.blogspot.no/2012/04/fixing-stuck-focus-ring-on-canon-50mm.html

Getting the lens repaired here in norway was close to the cost of a brand new lens, so I figured I had nothing to loose. I have never repaired a lens or anything similar before. If I can do it, odds are you can do it too!

6D | 28 f1.8, 50 f1.4, 100 f2.0

Mt Spokane Photography

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Re: I Repaired my own 50mm 1.4, and so can you!
« Reply #1 on: September 05, 2013, 06:39:59 PM »
Welcome to CR Emil.
Post some photos and tells us about your photographic interests.

BozillaNZ

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Re: I Repaired my own 50mm 1.4, and so can you!
« Reply #2 on: September 05, 2013, 07:04:25 PM »
Welcome to CR Emil.
Post some photos and tells us about your photographic interests.

Don't be so harsh, we are in the 'Gear' sub-forum, yes?  :-X

Also most of the photographers can't do any fixing job themselves, they will cream OMGWTH have you done?!?! Send it to Canonnnnn haxxorz!!
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Mt Spokane Photography

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Re: I Repaired my own 50mm 1.4, and so can you!
« Reply #3 on: September 05, 2013, 07:09:58 PM »
Welcome to CR Emil.
Post some photos and tells us about your photographic interests.

Don't be so harsh, we are in the 'Gear' sub-forum, yes?  :-X

Also most of the photographers can't do any fixing job themselves, they will cream OMGWTH have you done?!?! Send it to Canonnnnn haxxorz!!

What are you on??  Must be good stuff. 
 
That was a friendly post welcoming a new member, and trying to encourage him to tell us more about his photography and interests.

BokChoiTV

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Re: I Repaired my own 50mm 1.4, and so can you!
« Reply #4 on: September 05, 2013, 07:33:08 PM »
Popcorn sounds good right about now.

johnf3f

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Re: I Repaired my own 50mm 1.4, and so can you!
« Reply #5 on: September 05, 2013, 08:42:34 PM »
My trusty 50mm 1.4 stopped focusing the other day, and I couldn't even focus manually by turning the ring. I googled the issue and found that many others had experienced the same thing. I never dropped my lens or anything. It seems that all it takes is a bit of pressure on the front focusing element, and a metal part inside will get bent. This can cause the focus mechanism to get stuck.

I got a lot of help from following this guide:
http://image23photographic.blogspot.no/2012/04/fixing-stuck-focus-ring-on-canon-50mm.html

Getting the lens repaired here in norway was close to the cost of a brand new lens, so I figured I had nothing to loose. I have never repaired a lens or anything similar before. If I can do it, odds are you can do it too!

Well done you!

KyleSTL

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Re: I Repaired my own 50mm 1.4, and so can you!
« Reply #6 on: September 05, 2013, 08:43:21 PM »
Welcome, Emil, I also enjoy fixing my own gear.  I have repaired about 2 dozen bodies and about a dozen lenses.  In fact, just today I received a broken 24-105mm that needs a new aperture.  I'm excited, as this will be my first L lens fix.  Glad your first foray into DIY lens fixing was successful.  I hope you have many more successes in the future.
Canon EOS 5D | Tamron 19-35mm f/3.5-4.5 | 24-105mm f/4L IS USM | 28-105mm f/3.5-4.5 USM | 70-300mm f4-5.6 IS USM
15mm f/2.8 Fisheye | 28mm f/1.8 USM | 50mm f/1.4 USM | 85mm f/1.8 USM | 3x 420EX | ST-E2 | Canon S90 | SD600 w/ WP-DC4

risc32

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Re: I Repaired my own 50mm 1.4, and so can you!
« Reply #7 on: September 05, 2013, 09:20:18 PM »
Welcome to CR Emil.
Post some photos and tells us about your photographic interests.

Don't be so harsh, we are in the 'Gear' sub-forum, yes?  :-X

Also most of the photographers can't do any fixing job themselves, they will cream OMGWTH have you done?!?! Send it to Canonnnnn haxxorz!!

what the what? (as my 4year old is prone to saying)

Mt Spokane Photography

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Re: I Repaired my own 50mm 1.4, and so can you!
« Reply #8 on: September 05, 2013, 09:41:23 PM »
I usually don't get set off so easily.
 
I apologize to the group, sorry to spoil your popcorn.
 
 
I also repair lenses as a hobby, but its mostly the old MF ones unless its something simple like a lube job.  I've had a bad 50mm that performed as noted, after it was fixed, the focus was so far off that it had to be sent to Canon for adjustment.

rpt

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Re: I Repaired my own 50mm 1.4, and so can you!
« Reply #9 on: September 05, 2013, 10:45:55 PM »
what the what? (as my 4year old is prone to saying)
I like that phrase. May I have your 4 year old's permission to use it when appropriate? :)


My trusty 50mm 1.4 stopped focusing the other day, and I couldn't even focus manually by turning the ring. I googled the issue and found that many others had experienced the same thing. I never dropped my lens or anything. It seems that all it takes is a bit of pressure on the front focusing element, and a metal part inside will get bent. This can cause the focus mechanism to get stuck.

I got a lot of help from following this guide:
http://image23photographic.blogspot.no/2012/04/fixing-stuck-focus-ring-on-canon-50mm.html

Getting the lens repaired here in norway was close to the cost of a brand new lens, so I figured I had nothing to loose. I have never repaired a lens or anything similar before. If I can do it, odds are you can do it too!
That is some piece of work! Congratulations! Welcome!

KyleSTL

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Re: I Repaired my own 50mm 1.4, and so can you!
« Reply #10 on: September 06, 2013, 12:14:23 AM »
what the what? (as my 4year old is prone to saying)
I like that phrase. May I have your 4 year old's permission to use it when appropriate? :)
"What the what?" Is a popular catch phrase of Liz Lemon (played by Tina Fey) on NBC's 30 Rock (a personal favorite of mine).
Canon EOS 5D | Tamron 19-35mm f/3.5-4.5 | 24-105mm f/4L IS USM | 28-105mm f/3.5-4.5 USM | 70-300mm f4-5.6 IS USM
15mm f/2.8 Fisheye | 28mm f/1.8 USM | 50mm f/1.4 USM | 85mm f/1.8 USM | 3x 420EX | ST-E2 | Canon S90 | SD600 w/ WP-DC4

Emil

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Re: I Repaired my own 50mm 1.4, and so can you!
« Reply #11 on: September 06, 2013, 06:50:59 AM »
Thank you for the warm welcome guys! I have been browsing this forum occasionally for a while, but I never took the time to register. I am looking forward to posting and reading more in the future. I think this forum has a great mix of both humor and professional advice.
6D | 28 f1.8, 50 f1.4, 100 f2.0

paulc

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Re: I Repaired my own 50mm 1.4, and so can you!
« Reply #12 on: September 06, 2013, 08:15:26 AM »
You can bend that piece back a couple of times and then you have to replace the barrel.  It's easier to just always leave the hood on and to develop the habit of just setting the focus to past infinity when you stow the lens.

Also worth noting is that for as deep in as you dug, you're not that much further from being able to replace the focus motor and gear train assembly (it's all one part).  The motor burns out and the gears can tear up.



The Ballad of Brave Sir Fifty

Bravely bold Sir Fifty rode forth from Calumet
He was not afraid to die, O brave Sir Fifty!
He was not at all afraid to be killed in nasty ways,
Brave, brave, brave, brave Sir Fifty!

He was not in the least bit scared to filled with fungal growth,
Or to have his aperture fail, and his blades broken;
To have his casing split, and his motor burned away;
And his gears all hacked and mangled, brave Sir Fifty!

His threads smashed in and his barrel torn out
And his switches popped off and his ribbons unplugged
And his electronics scraped and his mount fall off
And his primary--
« Last Edit: September 06, 2013, 08:20:46 AM by paulc »

risc32

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Re: I Repaired my own 50mm 1.4, and so can you!
« Reply #13 on: September 06, 2013, 08:31:59 AM »
I think this forum has a great mix of both humor and professional advice.

i think so too. welcome.
now if only we can keep mt spokane from flying off the handle. i kid.

Viggo

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Re: I Repaired my own 50mm 1.4, and so can you!
« Reply #14 on: September 06, 2013, 08:52:56 AM »
This is what you get for posting on a friday  ;D ;D

"what the what? " I like that.  I'm stealing it for sure!

Welcome Emil, you a scandinavian?
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