Brand new 5D3 has dust on sensor

[duydaniel]

What do I do?
I got this shipped from Amazon.com and found several spots of dust.
I tested on the kit lens 24-105 at
f 22
10 seconds
handheld pointing at the wall making circular motions.
Manual focus set at infinity.
ISO 100.
Here is the raw file:
http://www.mediafire.com/?i4uqf5zdbbptao6
I don't have photoshop to do the white level thing
:-[

What should I do?

 

[wickidwombat]

ah its just a factory dust bunny mine had a couple too
just get a blower and hold it upside down
in bulb mode hold the shutter down so the mirror stays up and blow air around in there
be carefull not to stick the nose of the blower inside as you dont want to actually touch the sensor

should clear it right up

 

[duydaniel]

I have a very bad experience with doing that.
I have a Giottos AA1900 and it blew even more dust into my Nikon D5100 that I ended up using the wet method. Still not perfect because it kept introducing new dusts which are totally invisible to naked eyes. I sent the unit to Nikon and the problem solved.

Now I am trying out the 5D3 and faced this issue again.

 

[wickidwombat]

hmmm wierd the giottos are supposed to not suck dust in

I've never had a problem blowing out factory dust bunnies before let alone introducing more dust

I ususaly give the blower a few squirts in a clean area pointing away from the camera before i point it in there to make sure its not going to blow anything inside

 

[AnselA]

I have used wiki's method before and that cleared up the dust problem...

 

[duydaniel]

IMO, it's impossible for single person at home making a perfect clean sensor.
Because dusts that will likely showing up when view 100% is invisible to human eyes.
Second, there are dust everywhere unless you're in super cleaned room where people put on uniform etc...

It's a matter of tolerance of "good enough" result. However, you will probably return your 4K camera if it comes with dust. Now my problem is I rather know ahead of time whether there is such perfect cleaned sensor on any brandnew camera. If they replace me with another and that one turn out not 100% perfect, then I would have to return it again.

This camera is not cheap and so I set a very high standard on this.

 

[RLPhoto]

Just use a blower. It works well with my 5D, and that camera doesnt even have sensor cleaning built in. I blow it every couple of months and works nicely.

Dont fret over dust, its a part of the photographers plight. Just learn how to handle it and move on.

 

[Mt Spokane Photography]

Your camera sensor will have dust on it 1 sec after you clean it, so just blow it off, and don't worry about a few tiny specs. As soon as you remove a lens, dust drifts in.
It is possible to blow dust around inside the mirror box with a blower, so get one like the gittos Rocket blower that is going to blow hard enough to blow the dust out of the mirror box.
If its nasty problem dust that can't be removed by blowing, then send it for cleaning, but remember, its always there, a little is something you learn to tolerate.

 

[edawg]

I looked at your file. I had to adjust levels to crazy values and view at 100% to see what you are talking about. You will never see that in real world shooting.

You are shooting a blank wall at f22 and pixel peeping the results. You are allowing yourself to be bothered by something that will never, ever be an issue. If you were to shoot an actual object at f22 with that sensor, I guarantee you won't ever be able to find that dust even knowing where to look and pixel peeping at 100%. But your picture will be soft because f22 sucks anyways ;D

If it reeeeaally bothers you try using a blower; try the manual cleaning option in the camera's menu. Try swapping lenses and repeating your blank wall test. I've previously tried to chase down some sensor dust only to find out later that it was not even on the sensor at all.

 

[ramon123]

First of all - don't worry, there's no need to send it back.

Just get it cleaned.