michaelbehlen Senior Member 352 posts Joined Aug 2006 Location: Fresno, Ca More info | Sep 21, 2006 02:33 | #1 Hey guys, I just got my 17-40L and there seems to be somethign wrong with all the images. I tried cleaning the lense but the spots are stil there. Do I have a bad copy, or did I just not clean it good enough?
100% crop:
There are three of these black dots on all the images from tonight(pissed). Thanks for your help. Michael Behlen
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BearSummer Senior Member  925 posts Likes: 12 Joined Jul 2003 Location: South East UK More info | Sep 21, 2006 02:45 | #2 Hi Michaelbehlen, Moderation is for people that can't handle excess.
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Kennymc Goldmember  1,501 posts Joined May 2003 Location: N.E coast of UK More info | Sep 21, 2006 02:48 | #3 Looks like sensor dust... Try cleaning the sensor and both the front and rear elements of the lens... www.kennymc.com
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Sep 21, 2006 02:51 | #4 Alright guys, Ill take it down to the shop tomorrow. No comressed air for me. Thanks. Michael Behlen
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Kennymc Goldmember 1,501 posts Joined May 2003 Location: N.E coast of UK More info | Sep 21, 2006 03:06 | #5 michaelbehlen wrote in post #2016078  Alright guys, Ill take it down to the shop tomorrow. No comressed air for me. Thanks. Try holding it upside down set on bulb and use a blower brush, I use a Giotto rocket blower... You are right not to use compressed air... www.kennymc.com
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JimG I feel thoroughly satisfied  12,255 posts Likes: 2 Joined Jun 2005 Location: Australia. More info | Sep 21, 2006 03:12 | #6 Yeah, I second the little handheld blowers.. so long as you don't poke anything on the insides with it and use a clean one you can't really damage the camera so no harm in trying Gear Listhttp://www.codastudios.com.au
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stupot Goldmember 2,227 posts Joined Dec 2005 Location: UK, Portsmouth Uni / HW Bucks More info | Sep 21, 2006 03:24 | #7 i checked the exif, you were shooting at f22 so sensor dust is very likely to show up Canon EOS 350D, Sigma 10-20 f4-5.6, 24-105 f4L IS, 70-200 f4L, 300 f4L IS, Kenko 1.4x pro300, 430EX, Apple Powerbook G4
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jestergx4 Senior Member  358 posts Joined May 2006 Location: Ventura County, CA More info | Sep 21, 2006 09:00 | #8 A few puffs from the Giotto Rocket Blower will take care of that.
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Jon Cream of the Crop  69,628 posts Likes: 227 Joined Jun 2004 Location: Bethesda, MD USA More info | Sep 21, 2006 12:25 | #9 Sensor dirt, but from the edge effects it may be more than loose dust; may need a swabbing to get it off. Still, it's a fact of digital life. Jon
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As said above, do a search on here and there's a sticky somewhere I think 