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02-22-2010, 09:47 PM   #1
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Another spots on sensor problem.

Photo posted below.


I've circled the spots, and the top one, looks to me like a smudge of something but I'll let you all tell me if it is dust or a smudge. I do not take my lenses off outside near water or sand. And I have no idea how long this has been there because I don't normally shoot at f22. I've only had this camera since January this year.

02-22-2010, 11:30 PM   #2
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Blower.

Invest $10-12 in a Giottos Rocket Blower and use that. It takes about 60 seconds to mirror up, blow the sensor with a few short bursts of air from the blower, re-mount the lens and test. It really is the most simple of solutions that works about 95% of the time for simple dust specks.

Jason
02-22-2010, 11:39 PM   #3
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Thanks Jason. Yes, I know about the blower, I just haven't bought one yet. Next week I plan on getting one.

I just hope the top spot is actually just a spot and not a smudge from something. I've never touched the sensor but it looks bigger than a spot of dust.

Last edited by photolady95; 02-22-2010 at 11:49 PM.
02-23-2010, 06:26 AM   #4
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No it's dust alright ... 100% it's dust.

02-23-2010, 06:30 AM   #5
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Thanks Alfisti, I was thinking dust spots would be all round, not smeared like the top spot is, so I think I'm going to order that blower today. I was going to wait until I had enough money for the blower and some eneloops, but I want that dust gone.
02-23-2010, 08:06 AM   #6
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Yeah they are sometimes called "Dust worms' as they make odd shapes.

With the 100D my blower ALWAYS worked 100%, but the 20D ... man, it just does not budge the dust.
02-23-2010, 09:28 AM   #7
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QuoteOriginally posted by photolady Quote
Thanks Alfisti, I was thinking dust spots would be all round, not smeared like the top spot is, so I think I'm going to order that blower today. I was going to wait until I had enough money for the blower and some eneloops, but I want that dust gone.
+ other cleaning tools : lens paper/cloth, lens fluid cleaner, Pentax-sensor-cleaner O-ICK1 (maybe),
02-23-2010, 11:00 AM   #8
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guide: Introduction - Cleaning Digital Cameras - D-SLR Sensor Cleaning.

02-23-2010, 11:38 AM   #9
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QuoteOriginally posted by Jasvox Quote
Invest $10-12 in a Giottos Rocket Blower and use that. It takes about 60 seconds to mirror up, blow the sensor with a few short bursts of air from the blower, re-mount the lens and test. It really is the most simple of solutions that works about 95% of the time for simple dust specks.

Jason
Beware of the Giottos Rocket Blower!

I bought one half a year ago.
When I took it out of the plastic wrapper it felt a little sticky.
I still used to blower.

Result: dust gone, but 3 new sticky particle on the sensor....
The small particles were so sticky that my local photo shop did not get them off.
At last I bought a set of APSC Green Clean wet & dry swipes and got it all off...
So much for Giottos quality...

Now, 6 months later the rubber does not feel sticky anymore.
I've blown against a clean mirror but cannot see any particles coming loose.

I've read a tip from someone on this forum that works very well for me:
Get a eye liner brush, wash it several times with soft soap, let it dry for a day, dry wipe the sensor.
It's cheap and works great.

- Bert
02-23-2010, 02:37 PM   #10
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Dust takes many forms, but is probably more often short strands than perfectly round specs.
02-23-2010, 04:36 PM   #11
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Thanks all for the suggestions. I ordered a Giottos this morning and will just have to wait and see if it works right or not.

Marc, thanks for info on dust forms.
02-24-2010, 04:56 PM   #12
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Giottos should take care of it, might take couple tries.
For eneloops, try:
SANYO ENELOOP AA 2000 mAh 4 Battery Pack Ultra Low Discharge..
And for a kick butt charger:
MAHA MH-C9000 Advanced Battery ChargerFree Deluxe Storage Ca..
Cheers, Mike.
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