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19th November 2003
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#1 |
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Member
Join Date: May 2003
Location: CCK
Posts: 256
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canon zoom lens collects dusts on inner elements?!
i just checked CANON service centre regarding this issue.
the tech says some canon zoom lens collects dusts in the inner elements due to statics. it is annoying as I have to send the lens for servicing reguarly. any advice on how to prevent this?  |
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19th November 2003
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#2 | |
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Member
Join Date: May 2003
Location: Singapore
Posts: 670
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OT here, u send ur CANON lens to their service centre for servicing? what is the charge like?
thanks
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19th November 2003
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#3 | |
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Member
Join Date: May 2003
Location: CCK
Posts: 256
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i guess different lens might attact different charge. and, it also depends on the condition of the lens. if it requires more works to service, the final fee might be higher than what they quote u. |
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19th November 2003
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#4 | |
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Senior Member
Join Date: Jun 2003
Location: Singapore, Bedok
Posts: 1,801
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19th November 2003
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#5 |
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Member
Join Date: Sep 2003
Posts: 1,312
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I opened up a few of my canon lens to see how the internal works. I can't say for all the lens but for the one I played with, there is actually a gap between the back element and the front elements.
http://forums.clubsnap.org/showthread.php?t=51345 The last pic is the rear element, which is consistant on the 50mm and 28-105mm. Because of the gap, dust can get stuck inside. As it goes, if its air tight, dust cannot get in. Cleaning these part removed all the dust in the lens. I think the design for lenses with no external zoom parts may be different, I can't be sure. It would be good if you can get your hands on the book, "Canon lens work". Because of the design, I don't think there's anyway to prevent this. Maybe more care on exposing the rear can help but then dust is everywhere....... Hope it helps. |
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19th November 2003
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#6 |
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Member
Join Date: May 2003
Location: CCK
Posts: 256
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i saw ur URL. wow. wide eye open...
 i was actually thinking putting cling wrap on the lens....hope it can reduce the chance of getting dusts.. |
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19th November 2003
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#7 | |
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Member
Join Date: Sep 2003
Posts: 1,312
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20th November 2003
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#8 | |
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Member
Join Date: May 2003
Location: Singapore
Posts: 670
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ST1100 & Kiwiginger,
thanks for the replies... 
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11th December 2003
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#9 |
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Senior Member
Join Date: Jan 2003
Location: Loyang
Posts: 2,239
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Hi... read the above threads... did'nt know dust cleaning is soooooo costly....
juz wondering if it is still under warranty do we need to pay for the clean up?? where is the canon service centre anyway??... and do the dust affect iimage quality?? sorrie for asking soooo many Qs at one shot.. |
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11th December 2003
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#10 |
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Member
Join Date: Mar 2002
Posts: 65
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Yes. You need to pay for dust cleaning even under warrenty. The service center is along Bukit Merah.
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11th December 2003
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#11 | |
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Senior Member
Join Date: Jun 2003
Posts: 4,395
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Need to pay under warranty/no warranty ? |
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11th December 2003
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#12 |
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Member
Join Date: Dec 2002
Location: Hillview, Singapore
Posts: 161
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I've sent my 28-135 for cleaning recently cos there is dust in the inner element. It is $80 before GST. I've also sent my 10D for sensor cleaning a few weeks back. It was free.
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11th December 2003
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#13 | |
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Senior Member
Join Date: Jan 2003
Location: Loyang
Posts: 2,239
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 so ex?!... 80 bucks... so i guess it will affect the quality of the image ah, if not one will not fork out soooo much to just clean it...but it is'nt fair right??... since it is under warranty they should clean it up for us... since it is the design of the lens that allows "uninvited guests" to get in... how come 10D free wor?? |
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11th December 2003
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#14 |
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Member
Join Date: Dec 2002
Location: Hillview, Singapore
Posts: 161
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dunno leh..
they charge you for cleaning sensor? |
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