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General photography questions and answers: Discuss Spots....Having a "Spot" of bother...(DSLR Canon 350D) I have a speck of dust on the camera somewhere thats getting on ...
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Old 26-12-2010, 11:17   #1 (permalink)
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Spots.

Having a "Spot" of bother...(DSLR Canon 350D)
I have a speck of dust on the camera somewhere thats getting on photographs...

Ok, so I tried different lens, still there, so its not the lens.
I did the mirror lock up thing to clean sensor with a VERY soft brush, its still there.

Before I drag the old Microscope out to inspect the sensor to find this thing (I cant see it by naked eye or X4 magnifier) am I missing the obvious?...

Where else could it be, or am I on the right track here?...
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Old 26-12-2010, 12:25   #2 (permalink)
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Re: Spots.

Yep - you have eliminated the lens, and as the spot is on the completed image you can rule out the pentaprism.

I usually use a blower to do a quick clean, the soft camel hair brush just might have missed the dust speck. For a more thorough clean I've used a Sensor Klear pen. 7 Day Shop used toi sell them for £5 - bargain, but I've just looked and they don't seem to do them anymore
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Old 27-12-2010, 08:26   #3 (permalink)
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Re: Spots.

Thanks... I have some tools from PCB assembly days, and there is a "Soft Brush" that I can soak in pure alcohol that may help, but its down to the ol' Microscope on X10, X20 etc. until I find the likkle bu----r...
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Old 27-12-2010, 13:17   #4 (permalink)
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Re: Spots.

I use a SensorBrush for dust but for the more stubborn 'bunnies' use the CopperHill Sensor Cleaning Method. Spend as little time as possible with the sensor exposed to lessen chance of more dust settling! Interestingly, not had a dust issue for the self-cleaning 7D (reckoned they were a bit of a gimmick - but seem to work!)
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Old 27-12-2010, 14:25   #5 (permalink)
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Re: Spots.

Do the basic test first, take a picture of a sheet of white paper, at f8-f11, and if it shows on there then carry all the usual things that you do afterwards....take your time and be carefull...
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Old 02-01-2011, 10:56   #6 (permalink)
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Re: Spots.

I fond it!......

Something sticky, possibly tree sap?.. anyway, it came off on a cotton bud thing, and a good clean afterwards, no trace of anything on a check afterwards.

I needed the X10 magnifier to even see it.
Thanks again for the help folks.
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Old 02-01-2011, 11:02   #7 (permalink)
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Re: Spots.

Where was it?
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Old 02-01-2011, 11:42   #8 (permalink)
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Re: Spots.

Quote:
Originally Posted by Silver Dragon View Post
I fond it!......

Something sticky, possibly tree sap?.. anyway, it came off on a cotton bud thing, and a good clean afterwards, no trace of anything on a check afterwards.

I needed the X10 magnifier to even see it.
Thanks again for the help folks.
My theory is that the stuck bits are pollen grains - based on nothing except that I'd guess pollen would have some sort of stickiness and they'd be floating around just waiting to stick to your sensor!
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Old 08-01-2011, 10:03   #9 (permalink)
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Re: Spots.

Where was it?... on the sensor... I would find it hard to explain without showing a photograph of it, but being the camera was in bits at the time?....

Pollen?... yes, maybe... I didnt examine it, just got it to be a bit looser, then used a Solder sucker tool (PCB assembly tool, suction device for removing solder) to just suck it away....
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Old 08-01-2011, 18:34   #10 (permalink)
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Re: Spots.

Quote:
Originally Posted by Markulous View Post
I use a SensorBrush for dust but for the more stubborn 'bunnies' use the CopperHill Sensor Cleaning Method. Spend as little time as possible with the sensor exposed to lessen chance of more dust settling! Interestingly, not had a dust issue for the self-cleaning 7D (reckoned they were a bit of a gimmick - but seem to work!)
Completely behind the link Mark put up for camera's that don't self clean. Still use my 20D, it has approx. 45 cleanings on it and clear as a fat bird at the bird feeder. The nice thing about this kit is it has the right kind of cleaner in it. I also haven't had to clean any camera I have with self clean, My IR 400D (self cleaning) has the lenses changed as fast as 40 miles an hour in US speed,,,,,that's a lot of lenses and I've never hand cleaned.
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Old 08-01-2011, 20:47   #11 (permalink)
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Re: Spots.

Hi everyone
Never had the nerve to clean my sensor, but feel its time. Can you buy the Copperhill kit in the Uk? Thanks for your help

Daz
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