70-200mm f4L IS hair line crack ??


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Apr 21, 2007
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Yew Tee
#1
Hi! may I know is that 70-200mm f4L IS at the tripod mounting location originally got a line there or thats my lens got hair line crack ?
Have a look at my pic



:( :(

am I post in the right thread ?
 

Dream Merchant

Moderator
Staff member
Jan 11, 2007
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#2
Looks more like a tool mark or moulding mark of some sort.

If you feel worried about it, why not just pop by any shop and take a look at other pieces to see if got that mark or not?
 

niki

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Dec 3, 2005
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SengKang
#3
hi nick,

mine has the 'crack' too.. looks like the way the lens was moulded :)
 

Apr 21, 2007
259
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Yew Tee
#4
Thx for yr fast reply, hope that someone have the same lens as mine said thats a moulding mark or tool mark as u did :) so I don't need to go down to the shop again, I just bought it
23 june saturday...
 

niki

New Member
Dec 3, 2005
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SengKang
#5
it looks fine to me. din notice it until u mentioned. haha... enjoy the lens bro! :thumbsup:
 

Apr 21, 2007
259
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Yew Tee
#6
hi nick,

mine has the 'crack' too.. looks like the way the lens was moulded :)
Thanks for yr reply ;) I feel better now....hehehe don't need to go down the shop loh...:D

I like ClubSNAP forum, so late still have member reply me :) thx both of u here
 

Aug 16, 2005
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East
#7
i also having the line there. It should be just the mould line. ;)
 

kcuf2

Senior Member
Dec 29, 2005
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KFC
#8
my nikon 70-200 also has this "hair line crack"......... on the ring and on the lens... so its not only a canon problem ;p
 

Venom81

Senior Member
Nov 16, 2004
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#9
I also have tat. :bsmilie:
 

tony_teo

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Feb 10, 2005
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Tanah Merah
#10
That's not a crack, it's too straight and uniform. Looks like it's from the molding process.
 

Quest

New Member
Oct 16, 2006
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#11
to confirm if it is really a "molding/tooling line" get 2 pc of the same type of lens and compare. if it appears in exactly the same location then the "molding /tooling line" suspicion is correct.

in molding technology such line is called "parting line" whereby the upper cavity and the lower cavity "meets" when closing to allow the material to fill and form into shape during the molding process. after the molding process is completed, the mold then "opens/separates" allowing the molded part to be "ejected/taken out"
 

Artosoft

Senior Member
Aug 31, 2005
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Tanjong Katong
#12
Nothing wrong. That's molding line. I believe all the same lens have it. Unless (maybe) there are several manufacturer.

If that hairline crack, it is not so straight line like that.

Regards,
Arto.
 

Apr 21, 2007
259
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Yew Tee
#13
Thanks guy for replies.
Confirm not crack :sweat: :sweatsm: :sweatsm:

So I close this thread ;)
 

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