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Thread started 26 Nov 2010 (Friday) 15:19
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does a scratch on lens affect picture?

 
TeleFragger
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Nov 26, 2010 15:19 |  #1

looking at a used lens.. he is guaranteeing that the scratch is small and he guarantees that it does not affect picture quality in any way...

so my question asside from knowing i can take my camera and check it.. but if you do get a scratch... are they noticeable in the pics?

here is the scratch in question


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if I post a pic.. it is there to be picked on... (I have thick skin.. im in IT)

  
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s2kennyc
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Nov 26, 2010 15:21 |  #2

No, that scratch will not show up in normal pictures. Perhaps it might show up slightly when you stop down to say....F22 or something like that.

But with that said, that scratch is very noticeable and will affect resale value for sure. Unless it is a significant discount, I would pass on this lens and look for something that is visually more appealing. just my opnion.


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themadman
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Nov 26, 2010 15:22 |  #3

It tends to not affect IQ until, generally. It is possible if stopped down enough it may show up. Try taking a pic at f22+ and see if it shows up.


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jcpoulin
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Nov 26, 2010 15:24 |  #4

ouch...that would be too big for my liking...i would have to get a screaming deal for it....resale would be very tough


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SkipD
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Nov 26, 2010 15:25 |  #5

A scratch on a lens can induce flare if there is a light source impinging on it. A scratch can also cause cause enough light diffraction to mess with contrast and color a bit. However, the scratch itself will not show up in an image looking like a scratch.

I would not buy the lens. Heaven only knows what else happened to the lens that may have caused internal problems - even some which may not be apparent yet.


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artyman
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Nov 26, 2010 15:25 |  #6

You might find that this link will answer your question
http://www.lensrentals​.com …0/front-element-scratches (external link)


Art that takes you there. http://www.artyman.co.​uk (external link)
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philwillmedia
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Nov 26, 2010 15:30 |  #7

artyman wrote in post #11349899 (external link)
You might find that this link will answer your question
http://www.lensrentals​.com …0/front-element-scratches (external link)

And if you still have any doubt, there's this
http://www.kurtmunger.​com/dirty_lens_article​id35.html (external link)


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jcpoulin
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Nov 26, 2010 15:41 |  #8

philwillmedia wrote in post #11349912 (external link)
And if you still have any doubt, there's this
http://www.kurtmunger.​com/dirty_lens_article​id35.html (external link)

Buy would you buy this lens for full used retail value, or would you expect some discount from the seller?


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TeleFragger
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Nov 26, 2010 15:45 |  #9

ok without giving details so i dont loose out if i decide to buy it...

figure the normal price of this lense is about $1100 and i can get it for $750

im normally the guy who if something new is $900 and used is $800-$875 id pony up and go new...

so basically seeing the second link... from philwillmedia shows dirt and dust on a lens and it barely effects it...

should i still pass?


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philwillmedia
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Nov 26, 2010 15:52 |  #10

jcpoulin wrote in post #11349964 (external link)
Buy would you buy this lens for full used retail value, or would you expect some discount from the seller?

I'd pay full used value for the lens, but full retail value is so subjective.
The full retail value of a s/h item that is in as new cond is probably about 85% of new.
The full retail value of a lens with a scratch will obviously be less than that.
Full retail value of a used item is what someone is willing to pay for it in the condition it is.


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crn3371
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Nov 26, 2010 15:57 |  #11

There also looks what appears to be a small dent in the trim ring above the scratch.




  
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TeleFragger
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Nov 26, 2010 16:06 |  #12

crn3371 wrote in post #11350039 (external link)
There also looks what appears to be a small dent in the trim ring above the scratch.

here is the full pic


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if I post a pic.. it is there to be picked on... (I have thick skin.. im in IT)

  
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TeleFragger
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Nov 26, 2010 16:32 |  #13

so would you still pass? that scratch.. apparent small ding.. guaranteed working as if no scratch or ding... for $750?

just want to know if i should call him and arrange on getting it... i want this lens (either new or this one.. but i want the 24-105...)....

i just dont have the knowledge in wether the seen has any issues.. but im kinda relieved as person says guaranteed perfect pictures....


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crn3371
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Nov 26, 2010 16:34 |  #14

I see them listed quite regularly in the sell forum for around $850. Personally I'd pass as the $100 savings wouldn't be worth to me for the possible resale headaches.




  
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TeleFragger
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Nov 26, 2010 16:37 |  #15

crn3371 wrote in post #11350189 (external link)
I see them listed quite regularly in the sell forum for around $850. Personally I'd pass as the $100 savings wouldn't be worth to me for the possible resale headaches.

interesting.. i havent seen them that cheap... but ok ill pass and keep my eyes out.. maybe even put a wtb in..

thanks!
Jeff


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does a scratch on lens affect picture?
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