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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 04 Apr 2009 (Saturday) 01:02
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Extremely Dirty 85mm 1.8 - Need Advice

 
leroy_sunset
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Apr 04, 2009 01:02 |  #1

So I got a slamming deal on an 85mm 1.8 bundled with a 50D, but there's just one catch: the internals of the lens are really dirty. I don't have a photo - the lens is at the shop until Monday.

There are multiple specs, probably 4 or 5. They range in size from 1mm^2 to pretty darn small, but very noticeable and to me, unnerving. The specs are peppered throughout the internals, so it's not just a matter of OOF crap in the front. I couldn't see any effect on photos, but to be honest, I just took it to the shop straight away.

The local shop quoted me $150 plus 9.5% tax to have it taken apart and cleaned. They said all the major stuff would come out, but couldn't guarantee it would be perfect.

I called a Canon authorized service center in Portland, OR and was quoted $80 sight-unseen, and no tax of course :D

Should I send it off? Clearly $80 is better than $160-something. Who knows what Canon would charge, probably a ton. Is it even worth it? I probably won't shoot with it - I use my 50mm 1.4 a lot more on my 30D (and now my 50D :D). Sell it? I bet I could get $200 for it easy.

Advice, please. I'm sure you guys can come to a consensus :lol:


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1ruffryder
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Apr 04, 2009 01:04 |  #2

does the dust affect iq?


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spamster
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Apr 04, 2009 02:03 |  #3

Said it didn't affect IQ. But to me I'd say maybe just send to Canon or if you don't want to deal with it sell it to someone who wants and they could fix/clean it.


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Chez ­ Wimpy
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Apr 04, 2009 08:44 |  #4

Mine is a mess too. Looks like someone scattered the remains from a hole-puncher on the internal elements. Doesn't make one difference to the IQ, just a personal pet peeve... but then again, I do get a lot of PF on my copy ;-)a


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Rudi
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Apr 04, 2009 08:49 |  #5

Why buy it if you're going to fret about it? I don't care how good a deal it was - if it worries you, then obviously it wasn't good enough. And now that you've got it, you say you don't think you will even use it? I don't get it - what am I missing? ???


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NeutronBoy
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Apr 04, 2009 10:36 |  #6

If you feel like it must be cleaned, I would go with Canon. They wil get it apart and back together and you will likely get a better response out of them if there are any problems afterwards.
Send it registered and insured.


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leroy_sunset
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Apr 04, 2009 12:58 |  #7

Rudi wrote in post #7665133 (external link)
Why buy it if you're going to fret about it? I don't care how good a deal it was - if it worries you, then obviously it wasn't good enough. And now that you've got it, you say you don't think you will even use it? I don't get it - what am I missing? ???

Package deal - the guy didn't want to break it up, and it was an awesome deal with the body.

So send it in to Canon, or don't bother? I guess I'll have to put it through the paces when I get it back Monday.


Canon's Jurassic Park - 1Ds, 1D bodies
My traveling buddy: the trusty S95
Newest addition: T2i
Glass - 50mm 1.4, 40mm 2.8 STM, "the dirty 85" 1.8, 100mm 2.8 Macro, 430exII, 270ex, and more... including my favorite Lens: the 17-40mm!

  
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BigAlz1
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Apr 04, 2009 13:34 |  #8

Ok, 1-2 MM is HUGE!! That is the thickness of a dime and penny. The thickness of a piece of paper and the dust, around my house, is 1/10th of one millimeter. If something the thickness of a penny is getting into your camera lens I would removed the debris as cheap as possible and then get rid of the lens even quicker.
1MM WOW.




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egordon99
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Apr 04, 2009 19:15 as a reply to  @ BigAlz1's post |  #9

I'd take a dirty 85/1.8 over a clean "kit lens" any day of the week :lol:




  
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Collin85
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Apr 04, 2009 19:18 |  #10

leroy_sunset wrote in post #7664130 (external link)
Is it even worth it?

Nope. The way you feel is purely psychological. Those few pieces of dust are going to have negligible affect on output quality, so who cares? ;)


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snapppy
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Apr 04, 2009 19:29 |  #11

Huh? Get rid of the lens even quicker, BigAlz1???

Sure, sell it to some sucker in this forum? E-Bay maybe?
Well, I guess if its true condition is stated I wonder how many folks would be clamouring to snap it up.
Send it to Canon, it's a damn good lens, it's worth refurbishing PLUS they'll have to calibrate it if the elements are removed.


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BigAlz1
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Apr 04, 2009 19:44 |  #12

The point was to be a smart ass about the 2mm debris he said is in there lol :) I know, I know, I wouldn't want to be in his shoes but the point was if something a little over the 1/16th of an inch is falling into your lens (he he) then there is a bigger issue going on. I don't really feel the debris is that big but if it really is, then I personally wouldn't want it hanging around. Whats next gnats, ants, cobwebs? :)
Hope you get it sorted out bud.
(this post was just in fun and not to flame, please don't through stones at the Big Al)




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Rudi
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Apr 04, 2009 20:54 |  #13

leroy_sunset wrote in post #7666258 (external link)
Package deal - the guy didn't want to break it up, and it was an awesome deal with the body.

So send it in to Canon, or don't bother? I guess I'll have to put it through the paces when I get it back Monday.

I reckon that if it won't affect image quality, I'd just live with it. Then again, if it bothers you... it might save you money on high blood pressure medication to have it cleaned. :)


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CTM
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Apr 04, 2009 22:30 as a reply to  @ Rudi's post |  #14

I shaved the rear element of a MF lens once and alot of the filings got inside the lens. I used a vacuum cleaner and most of it got sucked out. You could give that a go first and see how you get along.

If not, go to Canon. :)


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leroy_sunset
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Apr 07, 2009 13:27 as a reply to  @ CTM's post |  #15

I got it back from the shop yesterday, and took some test shots againt a blue sky. There are 4 smudgy blobs visible in the shots at all focus lengths. I confirmed this is not dust on my sensor.

It's going to Canon Irvine today. Hope they don't rake me over the coals.


Canon's Jurassic Park - 1Ds, 1D bodies
My traveling buddy: the trusty S95
Newest addition: T2i
Glass - 50mm 1.4, 40mm 2.8 STM, "the dirty 85" 1.8, 100mm 2.8 Macro, 430exII, 270ex, and more... including my favorite Lens: the 17-40mm!

  
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Extremely Dirty 85mm 1.8 - Need Advice
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