20d full of dust

hi
i bought a used 20d and i took some pictures at f36 and white paper i cant make out weather its sensor dust or lens dust pls see pictures i have never had a 20d and never cleaned sensor some tips on cleaning and what to buy would help many thanks .

Looks like sensor dust - you'd better clean it before you start taking more photos of paper at f/36!

I hate to think what my sensor would look like on a shot like this... I'm starting to get blobs at f/8 which is probably a sign I need a wet clean


Do a search on here for sensor cleaning, there's heaps of info about it. A hand-compressed air blower is a good start. Don't use canned air.

i have air compressor at work will that be to powerful? will it damage the sensor

Don't use compressed air. You'll damage the sensor. If you can't see the dust in real world photos, I wouldn't bother. Dust is a fact of life.

try to search this forums or hit the google... there is a lot of threads with great info on how to clean sensors...
basics are: if the blower bulb doesn't help you need to use wet clean => a lot options here...

Thats the dirtiest I have ever seen. It doesnt cost that much to have it cleaned. I don t worry about a few spots on mine .

Chuck

Yes never use compressed air. There is always water in compressed air and it will mess up the sensor. That looks like it need professional help but for a little dust get a rocket blower.

A couple of good links:
http://cleaningdigital​cameras.com/
http://www.copperhilli​mages.com/

-js

I've posted a thread about mine and how I cleaned it here:
https://photography-on-the.net/forum/showthre​ad.php?t=466882

First use a 'Rocket blower' and see how you go.

So is mine! Some personal views on Sensor cleaning.

That's actually some rather nice evenly distributed dust you have there. If you were spoofing some old vintage shots, you wouldn't have to add dust specks in PP

photobitz wrote in post #5130091
That's actually some rather nice evenly distributed dust you have there. If you were spoofing some old vintage shots, you wouldn't have to add dust specks in PP

actually it should give nice grain in b&w shots

kosin wrote in post #5130240
actually it should give nice grain in b&w shots

Agreed. I think it would add some pleasing aesthetics.

I have only ever used a puffer to clean mine - it is very old - a rubber bulb with a pointy end which originally had a brush on it but I take that off for sensor cleaning. Does the job OK and is very gently as it depends how hard you squeeze it how much air blows out.

ok after a blow with the blower i think its made it worse, took picture at f36 white paper and auto levels in ps this is what i get ..it looks worse than before