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04/09/2005 03:11:19 PM · #1 |
| I recently bought a nikon lens (few weeks ago) and it already has dust inside on the elements, is this normal? What can be done to prevent this? |
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04/09/2005 03:13:13 PM · #2 |
Originally posted by RebAl:
I recently bought a nikon lens (few weeks ago) and it already has dust inside on the elements, is this normal? What can be done to prevent this? |
It's not really normal, but it happens. But if it happens to me I would take it back, explain, and ask for a lens without the dust. |
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04/09/2005 03:20:43 PM · #3 |
| probably sensor dust, you cannot prevent this. There is an interesting article in this week's TIME magazine. The Olympus Evolt E-300 SLR cam solves this problem by covering the imaging sensor with a transparent ultrasonic panel that shakes off dust and particles at 35,000 vibrations per second |
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04/11/2005 05:48:50 PM · #4 |
| Bet you Canon and Nikon will follow suit in about a year to year and a half |
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04/11/2005 06:58:02 PM · #5 |
Originally posted by theSaj:
Bet you Canon and Nikon will follow suit in about a year to year and a half |
I would bet that there is intellectual property (patent or patent pending) that covers the technology. That would limit who has access to it.
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04/11/2005 06:59:46 PM · #6 |
Bet they don't. All the manufacturers have been looking for solutions to the dust problem since the very first dslrs were on the drawing board.
Olympus have just given in and gone for a simple placebo option. It shakes off a few loose particles, it's nowhere near enough to knock off particles held on even by static charge, let alone things actually stuck to the sensor. So oly users still have to resort to the copperhill method like the rest of us for any dust that would actually be noticeable anyway.
The reason canon or nikon haven't come up with such a makeshift solution is because they take themselves a little more seriously, and know their users won't let them get away with this kind of rubbish that simply increases costs and has no real practical benefit - olympus on the other hand know they can appease their customers with flashy advertising of their latest toy's gadget factor.
Canon and nikon aren't ignoring the dust problem, they both know full well there just is no simple and practical solution available today that would fit within today's dslr price ranges.
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04/11/2005 07:50:17 PM · #7 |
Originally posted by riot:
Bet they don't. All the manufacturers have been looking for solutions to the dust problem since the very first dslrs were on the drawing board.
Olympus have just given in and gone for a simple placebo option. It shakes off a few loose particles, it's nowhere near enough to knock off particles held on even by static charge, let alone things actually stuck to the sensor. So oly users still have to resort to the copperhill method like the rest of us for any dust that would actually be noticeable anyway.
The reason canon or nikon haven't come up with such a makeshift solution is because they take themselves a little more seriously, and know their users won't let them get away with this kind of rubbish that simply increases costs and has no real practical benefit - olympus on the other hand know they can appease their customers with flashy advertising of their latest toy's gadget factor.
Canon and nikon aren't ignoring the dust problem, they both know full well there just is no simple and practical solution available today that would fit within today's dslr price ranges. |
That's a pretty scathing indictment of Olympus. Everything I've read about the Sonicwave system says it works as claimed. Do you know something the rest of us don't? Have you used one of the Oly DSLRs with the system? I don't know firsthand but have been trying to keep up on the subject. Even if it's not a perfect solution it seems to be quite a bit more than what Canon and Nikon are doing, which to my knowledge is nothing at all. Please enlighten us further if you know when and if the two big dogs will provide any relief from the dust problem.
Message edited by author 2005-04-11 19:56:07.
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04/11/2005 07:58:34 PM · #8 |
I gotta agree with Harvey, Oly may not have "invented sliced bread" with Sonicwave, but the data that's in seems to indicate that it is at least fairly effective. Certainly it won't loosen stuck particles, so the statement that swabbing may still be necessary (eventually) is accurate.
I still would not expect Nikon or Canon to "jump on the bandwagon." I think that sensor dust is really a non-problem, because...
1.) It normally only needs to be cleaned every 3-6 minths, and clenaing is very easy
2.) Even if not cleaned, only very large particles show up at 3.) A couple particles showing are no big deal, they can easily be removed in post.
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04/12/2005 10:18:41 PM · #9 |
Originally posted by coolhar:
That's a pretty scathing indictment of Olympus. Everything I've read about the Sonicwave system says it works as claimed. Do you know something the rest of us don't? Have you used one of the Oly DSLRs with the system? I don't know firsthand but have been trying to keep up on the subject. Even if it's not a perfect solution it seems to be quite a bit more than what Canon and Nikon are doing, which to my knowledge is nothing at all. Please enlighten us further if you know when and if the two big dogs will provide any relief from the dust problem. |
From my experience with the oly system, it shakes off large loose particles of dust when cleaned which often just get re-attracted by static to the sensor as soon as an image is taken, unless a blower brush is used in conjunction, and it won't remove anything a few blasts with a blower brush would take off anyhow, so it's pretty pointless. Moreover, i've found the 20D actually gathers a lot less dust, mainly due to the position of the sensor much further back behind the mirror, so i find myself attacking the 20D with a blower a lot less.
Also, i said specifically that "the big dogs" aren't providing a solution because there simply ISN'T a feasable and practical one available right now, my implication being that oly's isn't practical, but my point being that they aren't ignoring the problem, it's not enough of a problem to merit the sort of added expense it would take to build in a 100% effective solution - and they don't want to fob us off with a 10% effective solution, unlike oly.
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04/12/2005 11:46:33 PM · #10 |
Regarding the IP issue, it does not seem that there is a patent or a patent pending (at least in the US) on any ultrasonic lens cleaning method. However, there are a couple of software solutions to correcting an image taken with dusty sensor. Check out this link for USPT Office.
USPTO search on "Sensor dust" |
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