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09/04/2010 10:50:09 AM · #1 |
| I don't know when, where or how it got scratched but when I was cleaning under the lens cap of my Sigma 24mm I noticed a small scratch...at first I thought it was a hair but as I rubbed it I felt the 'indent' that was there, a tiny 2cm scratch. I took a couple of test shots and can't notice it in the pictures. Anyone know if I could expect to see any complications and in what situations? |
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09/04/2010 11:03:27 AM · #2 |
It most likely will never affect your images. Possibly if oblique light strikes it at exactly the right angle it will produce flare.
Here's an experiment for you; tear off a little piece of post-it note, say half the size of your little fingernail, and stick it on the lens and take a picture at, say, f/5.6 or f/8.
Feel better now?
R.
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09/04/2010 11:08:02 AM · #3 |
| What Robert said. If you had hundreds of scratches that size, you'd start to see a generally hazy appearance in some photos, especially where the scratches are illuminated by off-axis light. It will be almost impossible to see the effect of one such scratch. |
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09/04/2010 12:03:44 PM · #4 |
I agree with the two above/below me... However, if you are anal enough to need to fix this, then go get some diamond paste (a full set, from 100grit to 100,000 grit) and a pack of cotton pads (makeup pads), then starting @ 200 grit, carefully remove the hard edges of the scratch (tape can help limit the area you work in.. But be sure to leave a good margin), then once you cannot feel the scratch anymore with your nail, start working up the grits until you reach 100,000 grit, at which time your lens will look as though it was never scratched...
Oh, if you make more than about $5 per hour, you will probably be able to buy a replacement faster... :) .. But this will fix the scratch.. |
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09/04/2010 05:04:34 PM · #5 |
The diamond polish routine will surely remove any special coatings on the glass. I'd live with the scratch and leave the rest of the lens alone.
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09/04/2010 05:30:37 PM · #6 |
You'll be fine:
//www.lensrentals.com/news/2008.10.30/front-element-scratches
Message edited by author 2010-09-04 17:30:46.
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09/04/2010 05:41:13 PM · #7 |
Oh, my! If that doesn't prove the point, NOTHING will :-) Awesome yankoing, dude! Hat's off to you!
R. |
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09/05/2010 01:13:31 AM · #8 |
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09/05/2010 04:30:31 PM · #9 |
I've seen this before and have actually thought about buying a 50 1.8 used to "experiment" with.
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09/05/2010 05:09:29 PM · #10 |
Originally posted by fotomann_forever:
I've seen this before and have actually thought about buying a 50 1.8 used to "experiment" with. |
It does make buying miscellaneous glass at a thrift store more plausible ... |
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09/05/2010 05:58:42 PM · #11 |
Originally posted by GeneralE:
Originally posted by fotomann_forever:
I've seen this before and have actually thought about buying a 50 1.8 used to "experiment" with. |
It does make buying miscellaneous glass at a thrift store more plausible ... |
Thrift store? Just like in a flea market, the best you'll find there will probably be Vivitars. If you do find brand-name lenses, they'll be at least 20% more expensive than comparable eBay ones (usually more like 50%).
Message edited by author 2010-09-05 17:59:20. |
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