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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 21 Jan 2014 (Tuesday) 09:15
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Jiggo0109
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Jan 21, 2014 09:15 |  #1

Please allow me to post this link of a video showing how to clean the 17-40 2.8 internally... It just caught my attention because I have some lens (L) that needs cleaning and Im being tempted... What do you think? (Im not sure if this was already posted before)

https://www.youtube.co​m …_detailpage&v=t​OZRN2mxajk (external link)




  
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TheAnt
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Jan 21, 2014 09:25 |  #2

No. No. No. No. No. No. No. No. No. No. No. No. No.


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Jiggo0109
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Jan 21, 2014 09:28 |  #3

:lol:

TheAnt wrote in post #16623710 (external link)
No. No. No. No. No. No. No. No. No. No. No. No. No.




  
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DreDaze
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Jan 21, 2014 09:41 |  #4

first off it's the 17-55f2.8 IS being cleaned...yes it's been posted before, and i'm sure done by others here...it doesn't mean it's the way to clean dust out of every lens though

here's a link that lists/describes other lenses
http://www.lensrentals​.com …/a-few-easy-lens-dustings (external link)


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Jiggo0109
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Jan 21, 2014 09:50 |  #5

DreDaze wrote in post #16623753 (external link)
first off it's the 17-55f2.8 IS being cleaned...yes it's been posted before, and i'm sure done by others here...it doesn't mean it's the way to clean dust out of every lens though

here's a link that lists/describes other lenses
http://www.lensrentals​.com …/a-few-easy-lens-dustings (external link)

Thanks Dre... Are there threads discussing about the results after doing this procedure?




  
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lens ­ pirate
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Jan 21, 2014 11:47 |  #6

Jiggo0109 wrote in post #16623783 (external link)
Thanks Dre... Are there threads discussing about the results after doing this procedure?

The after procedure talk normally takes place in the For sale section.


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LV ­ Moose
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Jan 21, 2014 11:58 as a reply to  @ lens pirate's post |  #7

I've actually thought about doing this on my 28-135, and have watched similar videos. The amount of dust is tolerable for now. Don't know that I'd try it on an expensive lens.


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Aki78
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Jan 21, 2014 11:59 |  #8

Need a "DIY clean room" :lol:




  
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KirkS518
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Jan 21, 2014 15:05 |  #9

He's only removing the front element. As long as you line it back up when re- assembling, its a piece of cake. Even removing the second element is easy (it only goes back in one way). But like he says, its all about your personal comfort level in taking apart an expensive lens. I started with cheap ones to learn, and have little hesitation in opening up most lenses.


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DutchinCLE
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Jan 21, 2014 15:09 |  #10

note to self: "do noy buy lenses from Kirk" :)


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KirkS518
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Jan 21, 2014 15:21 |  #11

;) :D


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Jan 21, 2014 18:08 |  #12

Jiggo0109 wrote in post #16623783 (external link)
Thanks Dre... Are there threads discussing about the results after doing this procedure?

for the 17-55mm there are quite a few threads discussing it...again, it's probably entirely different procedure for different lenses though

here's some where you can probably find those discussing doing the DIY fix on the 17-55mm

https://photography-on-the.net …rch.php?searchi​d=41734305


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KirkS518
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Jan 21, 2014 19:04 |  #13

There is very little difference in the front element assemblies for most of the Canon lenses. I would feel comfortable saying that the procedure for the 17-40 and the 17-55 are going to be the same. The only real difference I've found is there are sometimes differences in how one gets to the screws. Some of the cheaper lenses have set screws that keep the outer ring on, but most of the higher end lenses have what was described in the video. Primes are usually a completely different assembly (disassembly) process, but not too far from the zooms.


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Digital - 50D, 20D IR Conv, 9 Lenses from 8mm to 300mm
Analog - Mamiya RB67 Pro-SD, Canon A-1, Nikon F4S, YashicaMat 124G, Rollei 35S, QL17 GIII, Zeiss Ikon Ikoflex 1st Version, and and entire room full of lenses and other stuff

  
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Jiggo0109
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Jan 21, 2014 21:43 |  #14

KirkS518 wrote in post #16624681 (external link)
He's only removing the front element. As long as you line it back up when re- assembling, its a piece of cake. Even removing the second element is easy (it only goes back in one way). But like he says, its all about your personal comfort level in taking apart an expensive lens. I started with cheap ones to learn, and have little hesitation in opening up most lenses.

Did you try it on your 24 105L already? This is the lens I am tempted to clean actually...




  
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cicopo
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Jan 21, 2014 22:18 |  #15

The nice thing about taking things apart is that all the hardware & parts are correctly installed & at the right torque or correct orientation with the necessary seals or gaskets installed. People with the right tools can take them apart, people with some of the right tools & some creativity can too, but only a select few can put them back together CORRECTLY.


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