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Photo Forum / Digital Photography / DSLR Cameras / January 2006Persistant dust on sensor
I've got a nast blob of 'dust' (more like a booger LOL) on my D70 sensor which multiple passes of pec pads & eclipse solution did not effect. I even kind of scrubbed on that area with extra fluid! Any other ideas for stubborn grime? > I've got a nast blob of 'dust' (more like a booger LOL) on my D70 sensor > which multiple passes of pec pads & eclipse solution did not effect. I > even kind of scrubbed on that area with extra fluid! > > Any other ideas for stubborn grime? Three fluids seem to work best (used separately, of course). Eclipse evaporates very quickly and seems to work best on easily removed foreign material. Sensor Clean fluid stays "wet" longer and seems to attack the more stubborn crap a bit better. Smear Away stays "wet" until you wipe it off, allowing it to more effectively clean the sensor. All of this depends upon using Sensor Swabs, not Pec Pads for cleaning the sensor surface. Bob >>I've got a nast blob of 'dust' (more like a booger LOL) on my D70 sensor >>which multiple passes of pec pads & eclipse solution did not effect. I [quoted text clipped - 10 lines] > sensor surface. > Bob Thanks, yes I should have said I'm using Sensor Swabs with Eclipse, not Pec Pads. Seonsor Clean $36 Canadian http://www.visibledust.com/sensor_cleaning_products.html http://www.robgalbraith.com/bins/content_page.asp?cid=7-6460-7296 -their link goes to a visibledust.com error page? "Put simply, there are situations where Sensor Clean will be required. Sensor Clean is a combination of non-scratching, medical-grade cleaning swabs (100 in all are included in each Sensor Clean kit) and a cleaning fluid that is less prone to streaking and easier to work with than either isopropyl alcohol [?] or methanol [Eclipse] based solutions. Degan hasn’t revealed exactly what’s in the magic cleaning elixir, except to say that it can be shipped internationally, contains no alcohol, isn’t flammable and is safe for use on the sensor’s cover glass (and lenses too)." Smear Away $27 http://www.micro-tools.com/Merchant2/merchant.mvc?LTPLanguage=EN& > I've got a nast blob of 'dust' (more like a booger LOL) on my D70 sensor > which multiple passes of pec pads & eclipse solution did not effect. I > even kind of scrubbed on that area with extra fluid! > > Any other ideas for stubborn grime? The pro's use methol hydrate (you can find it at your local pharamcy). > I've got a nast blob of 'dust' (more like a booger LOL) on my D70 > sensor which multiple passes of pec pads & eclipse solution did not > effect. I even kind of scrubbed on that area with extra fluid! > > Any other ideas for stubborn grime? Since the solution you are using is pure methanol and if the spot is staying in the same spot I would be worried about something embedded in the surface of the sensor filter. One last hope would be if it were something that splashed on there wet. I would put a half drop of distilled water on your sensor swab since it doesn't evaporate as quickly as methanol and let it soak a few minutes. Follow with a swab wet with eclipse and you should be good. Good luck. Rita >> I've got a nast blob of 'dust' (more like a booger LOL) on my D70 >> sensor which multiple passes of pec pads & eclipse solution did not >> effect. I even kind of scrubbed on that area with extra fluid! >> >> Any other ideas for stubborn grime? One source that I read about, when doing wet cleaning, uses 90% isopropyl alcohol or a 50/50 mixture of isopropyl alcohol and Windex. While I admit that I have never personally tried mixing in the Windex it makes some sense in that it would let the solution stay wet a little longer and allow for a little more scrubbing. Chuck Thanks Rita, what I finally did was use some walgreens isopropyl alcohol 91% and that cleared the blob right off. Water might also have worked. Just something the mathanol/eclipse didn't dissolve, that is apparently the same thing as shellac thinner but not all solvents work on everything. Water is indeed a powerful solvent. Thanks also to who reminded that sopping wet could mean a tragedy if it seeped behind the glass cover into the sensor! Otherwise it's really not that big a deal cleaning the sensor. >> I've got a nasty blob of 'dust' (more like a booger LOL) on my D70 >> sensor which multiple passes of pec pads & eclipse solution did not [quoted text clipped - 12 lines] > > Rita  SignaturePaul Furman http://www.edgehill.net/1 Bay Natives http://www.baynatives.com > Thanks Rita, what I finally did was use some walgreens isopropyl > alcohol 91% and that cleared the blob right off. Water might also [quoted text clipped - 4 lines] > it seeped behind the glass cover into the sensor! Otherwise it's > really not that big a deal cleaning the sensor. Great! I'm glad it was something simple. Also, if ever you have concerns about over saturating a cleaning swab you can put a couple drops of cleaning fluid on separate pad and then quickly touch your cleaning swab to that to transfer the proper level of moisture without worries of having too much. Rita Trade it in for an Olympus. No dust gives me plenty of time to think about noise...Sorry, couldn't resist. There are tradeoffs, but sensor dirt is something too many people learn about well after their purchase. There are some good ideas in this thread, but just be careful. Ron, One doesn't buy a camera to keep sensor dust away... The ides is to take good photos with good equipment. Sensor dust is accessory ;-) Cheers, Marcel > I've got a nast blob of 'dust' (more like a booger LOL) on my D70 sensor > which multiple passes of pec pads & eclipse solution did not effect. I > even kind of scrubbed on that area with extra fluid! > > Any other ideas for stubborn grime?< Some of the suggestions here advocate using extra fluid, or fluid that stays 'wet' for longer. However, bear in mind that the greatest risk when cleaning a sensor lies in fluid penetrating behind the anti-aliasing filter (which is the surface that you're actually swabbing) and adversely affecting the sensor, itself. There have been previous posts about this issue - including one from a D70 owner who found that the AA filter was not perfectly sealed on all sides, resulting in cleaning fluid seeping between the filter and sensor - with disastrous results. IMO, the golden rule of sensor swabbing is to keep the fluid used to a minimum (2 small drops, max) - and NEVER be tempted to 'flood' it with cleaning fluid in an attempt to disolve marks. 'S up to you, of course..... |
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