touji Senior Member 891 posts Likes: 1 Joined Oct 2011 Location: Northern Virginia More info | Nov 28, 2011 20:53 | #1 I ordered this lens off of eBay and this mark didn't appear in the photos I was given during the bidding process. I don't have any cleaning materials and I cannot determine whether this is just oil / dirt / mark or whether it is a scratch. Any ideas?   IMG_2395 by touji192, on Flickr5D Mark III | Gripped 60D | EOS M | Sigma 30mm f1.4 | Canon 24-70mm f2.8L II | Canon 8-15mm f4L | Canon 50mm f1.8II | Canon 100L | Tamron 150-600mm
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Photostock Member 161 posts Likes: 1 Joined Oct 2009 More info | Nov 28, 2011 21:05 | #2 Looks like a mark in the coating. Hard to tell if it goes into the glass. Does it adversely affect pictures? One of the bad things about buying lenses online is that some marks like that are only visible from certain angles (which clever/dubious sellers use to their advantage). 5DmkII / 7D / 24-70L / 70-200 2.8L IS / 28 1.8 / Zeiss Planar T* 50 1.4 / Zeiss Planar T* 85 1.4 / Zeiss Sonnar T* 135 2.8 / 580exII
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touji THREAD STARTER Senior Member 891 posts Likes: 1 Joined Oct 2011 Location: Northern Virginia More info | Nov 28, 2011 21:08 | #3 I don't think it affects the pictures too much (heck I don't and probably will never know), but leaves a bad taste in my mouth. This is the first time purchasing a used lens. I don't have the right tools / materials to clean lenses at the moment so I'm probably going to take it to my local camera shop and ask what their opinion on it is. I hope it is just a mark that can wash off. I'd like to have some faith in the seller and hoping this slipped with no ill intentions. 5D Mark III | Gripped 60D | EOS M | Sigma 30mm f1.4 | Canon 24-70mm f2.8L II | Canon 8-15mm f4L | Canon 50mm f1.8II | Canon 100L | Tamron 150-600mm
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Photostock Member 161 posts Likes: 1 Joined Oct 2009 More info | Nov 28, 2011 21:22 | #4 Best case scenario is that it's something that will wipe away. Good luck! 5DmkII / 7D / 24-70L / 70-200 2.8L IS / 28 1.8 / Zeiss Planar T* 50 1.4 / Zeiss Planar T* 85 1.4 / Zeiss Sonnar T* 135 2.8 / 580exII
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Bananapie Senior Member  522 posts Joined Jun 2011 Location: Seattle, Biloxi, Waco More info | Nov 28, 2011 22:31 | #5 Use a charcoal pen like a "lenspen" and see if it cleans it.
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kfreels Goldmember  4,297 posts Likes: 11 Joined Aug 2010 Location: Princeton, IN More info | Nov 29, 2011 01:45 | #6 Agreed. Get a lenspen and try to clean it. If you have lenses, you need one anyways and you aren't going to make whatever it is worse with a lenspen. I am serious....and don't call me Shirley.
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touji THREAD STARTER Senior Member 891 posts Likes: 1 Joined Oct 2011 Location: Northern Virginia More info | Nov 29, 2011 01:46 | #7 I'll pick one up at the store tomorrow! Any particular brands that work better than others? Or are they all pretty much equal in quality? 5D Mark III | Gripped 60D | EOS M | Sigma 30mm f1.4 | Canon 24-70mm f2.8L II | Canon 8-15mm f4L | Canon 50mm f1.8II | Canon 100L | Tamron 150-600mm
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Trowski Member 85 posts Joined Feb 2011 More info | Nov 29, 2011 02:01 | #8 There's actually a brand known as LensPen that is excellent. I've used them before and they work wonderfully. Just be sure to blow or brush away any large particles that could further scratch your lens before using the cleaning tip. - Trowski
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tomcat7886 Goldmember  3,277 posts Joined Jun 2011 More info | Nov 29, 2011 02:10 | #9 and be sure to point the scratched glass side downwards while cleaning, you wouldn't want stray particles to scratch around the glass. Canon T2i | 18-55mm IS Kit | Tamron 17-50 f2.8 VC | Joby Gorillapod SLR-Zoommmmm! | Black Canon Edition Crumpler Industry Disgrace
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arch.cm Senior Member  751 posts Likes: 1 Joined Apr 2011 More info | Nov 29, 2011 02:21 | #10 It looks like something oily. I would take it to your local camera shop and see what they can do... Let us know how it works out! 60D|Canon 10-22mm|Canon 85mm 1.8|Canon 50mm 1.8 ii|Canon 70-200mm f4L|Raynox DCR-250|Sunpak PZ42X
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philwillmedia Cream of the Crop 5,253 posts Gallery: 2 photos Likes: 25 Joined Nov 2008 Location: "...just south of the 23rd Paralell..." More info | Nov 29, 2011 16:55 | #11 Forget the paranoia. touji wrote in post #13465786 I don't have any cleaning materials... Get a microfibre cloth, give it a huff with your breath and it will probably wipe off. Regards, Phil
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touji THREAD STARTER Senior Member 891 posts Likes: 1 Joined Oct 2011 Location: Northern Virginia More info | Nov 29, 2011 17:33 | #12 After a bit of wiping, it ended up coming off. Thanks for all the input guys! I did end up buying some things to start my lens cleaning arsenal. 5D Mark III | Gripped 60D | EOS M | Sigma 30mm f1.4 | Canon 24-70mm f2.8L II | Canon 8-15mm f4L | Canon 50mm f1.8II | Canon 100L | Tamron 150-600mm
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jrbdmb Goldmember  1,291 posts Likes: 12 Joined May 2011 More info | Nov 29, 2011 18:17 | #13 FYI, just make sure to buy a real "LensPen" such as this one: Tools: 70D, 10-22, Tamron 24-70 VC, 70-300L, 135 f2L
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