Constant dust problems.....

I bought a used 1Ds2 and everything has exceeded my expectations.....excep​t for the dust problem. It is crazy! I can clean the sensor and using the Sensor Loupe I know for a fact is is perfectly clean. Then, go shoot a few homes the next day....and dust spots will be in my images. I will not change the lens once during the day. I take off the lens, grab the Senor Loupe, sure enough there is new dust.

How do I remedy this?

Is there some other type of internal camera cleaning I need to do, or does it need to go into Canon for an internal cleaning?

Thanks in advance,

Tyler

PS- I may be being too picky about the dust. I notice it in photos by my wife says no one will notice. Is it only us photographers that notice it?

But the 50mm F1.2 and 85mm F1.2 and your dust problems will be GONE! lol

Does this happen with all your lenses?

Cleaning the sensor is one thing.
What about the whole mirror box area, do you clean that too.
Most people just clean the sensor and don't think about the mirror box.
My guess is that it's residual dust that's settled in the mirror box that finds it's way onto the sensor.
Cleaning the sensor might only take a few minutes but to do the whole job properly can take anwhere up to an hour, depending on how anal you want to be.
What I do (when I can actually be bothered) is rocket blow the mb to get rid of anything loose, clean sensor, and then a take test shot to actually see that it is clean.
Even if you have a loupe, the only way to make sure your sensor is clean is to do a test shot each time.
You'll be surprised as to how often you think it's clean and it's not.
Usually I have to repeat the process two or three (or maybe four) times to get it perfectly clean.

Phil, no I do not clean the whole mirror box area. Just to make sure I understand your method, you are rocket blowing the mirror box with the mirror locked up, right? Is there a need to rocket blow the mirror box with the mirror down? Is the rocket blower the best option for mb or are there any other options?

Rick, the residual dust is probably the issue because it seems to happen no matter what lens I use. It would make sense that if the mirror box has dust it is going to find it's way to the sensor eventually. I usually shoot 3-4 homes a day this time of year, so I am constantly moving the camera. In the bag, out of the bag, driving, shoot, walk, shoot, etc. The camera is constantly being moving around throughout the day.

Thanks for the responses!

TGrundvig wrote in post #12518957
Phil, no I do not clean the whole mirror box area. Just to make sure I understand your method, you are rocket blowing the mirror box with the mirror locked up, right? Is there a need to rocket blow the mirror box with the mirror down? Is the rocket blower the best option for mb or are there any other options?

Yep, put the camera into manual sensor clean mode, and blow it out with a blower to start with.
Sometimes you'll find stray fibres that stick to the anti reflective coating on the inside of the mirror box and underneath the mirror. Where they come from or how they get there, I have no idea. I remove them using a pair of small tweezers.
I also occasionally wipe the inside of the mirror box with a q-tip dipped in iso-propyl alcohol so that it's moist but not dripping wet. You'll be surprised at how much grot you'll see on that q-tip afterwards.
It's also useful to wipe the flat surfaces at the front of the mirror box (like the the area around the contact pins are) where the lens mounts.

I don't always follow this procedure, sometimes I just do a sensor clean on its own.