Does your 40D frequently sensor clean?

C.S.I. wrote in post #6121164
Oh, thanks........can you tell me what page it tells me that it sensor cleans right out of the box, as my original post states? Let me read the Spanish manual too...maybe I missed something.

I was concerned that since it cleaned itself RIGHT OUT OF THE BOX, and every time since, that there was a potential problem.

Wait...it states on page 127 of the Russian manual
Датчик чистой

Got it....nevermind.....

Top of page 128: (English Manual)

"Whenever you set the power switch to <on> or <off> the Self Cleaning Sensor Unit operates..."

Assuming you turned the camera on 'straight out of the box' it will operate. (unless someone has changed the default setting of the camera in the shop)

However, If it cleaned it without you turning it on (it magically sensed you were 'taking it out of the box') then you have a problem

Or don't disable it, and just press any button immediately after you switch your camera on.

OK.....I got it...thank you to those that offered constructive criticism. And I dont need any more answers from the peanut gallery. I read and understand what the manual says. I was just shocked to see that the sensor had dust on it before it was even used...thas all.

Shame, I remember a time on here when you didnt get flamed for asking a legitimate question.....

Trying to be constructive too, I can add that it's by far better to leave it enabled than to disable it. Some dirt gets stuck, if allowed to settle on your sensor, but if the sensor cleaning vibration mechanism runs very often (as it does by default), the dirt may never have time to settle and get stuck.

That you at all can disable automatic cleaning is for another reason. Some dirt can't be shaken off, no matter how often you do it. To cope with that, the camera also supports a mapping mechanism, where you take a photo of something that should be white, and the camera will register all spots on that image. It will then tag this information to the images, so that Digital Photo Professional can battle the dust more or less automatically.
However, if you do this mapping prior to some very important photo event, which is a good idea by itself, then you may want to turn off automatic cleaning, since it may be successful in getting something off the sensor, or perhaps even worse, relocated some dirt, which is on its way to get off the sensor.

kenyc wrote in post #6124279
Dude, the cleaning has nothing to do with whether there is dust on the sensor or not. If you actually read the manual then you'd know that.

I wish this thread would just die . Where does it state this, DUDE. It states that "the sensor has a self cleaning sensor unit attached to the sensor's front layer to shake off dust automatically". It also states "Whenever you set the power switch to <on> or <off>the self cleaning sensor unit operates to automatically shake off the dust on the front of the sensor.

Can you direct me where it states that it has nothing to do whether there is dust on the sensor or not, because I dont see it.

I am now aware that there is not a problem regarding the sensor on my 40D. I'm just sick of "read the manual" replies....No wonder people in here have 20,000 posts in one years time. If you ask me, it doesnt state it cleans whether or not theres dust, but that just my interpretation........

apersson850 wrote in post #6124449
Trying to be constructive too, I can add that it's by far better to leave it enabled than to disable it. Some dirt gets stuck, if allowed to settle on your sensor, but if the sensor cleaning vibration mechanism runs very often (as it does by default), the dirt may never have time to settle and get stuck.

That you at all can disable automatic cleaning is for another reason. Some dirt can't be shaken off, no matter how often you do it. To cope with that, the camera also supports a mapping mechanism, where you take a photo of something that should be white, and the camera will register all spots on that image. It will then tag this information to the images, so that Digital Photo Professional can battle the dust more or less automatically.
However, if you do this mapping prior to some very important photo event, which is a good idea by itself, then you may want to turn off automatic cleaning, since it may be successful in getting something off the sensor, or perhaps even worse, relocated some dirt, which is on its way to get off the sensor.

Thank you for your help.

Folks, the OP's question has been answered (repeatedly). If you don't have anything constructive to say I think it's time to move on.

I hope you noticed the abscence of "dude" in my post!

C.S.I.

it would be worth investing in a rocket blower as well, if you haven't already.

apersson850 wrote in post #6124517
I hope you noticed the abscence of "dude" in my post!

LoL

andrew748 wrote in post #6124521
C.S.I.

it would be worth investing in a rocket blower as well, if you haven't already.

Thanks, I have one! I still stay away from that sensor if I can help it!

C.S.I. wrote in post #6124541
Thanks, I have one! I still stay away from that sensor if I can help it!

used to be a bit like that myself, but now i'm confident with the help of various posters and threads here, to have a bit of a blow as and when i feel it's needed.

enjoy the camera

andrew748 wrote in post #6124552
used to be a bit like that myself, but now i'm confident with the help of various posters and threads here, to have a bit of a blow as and when i feel it's needed.

enjoy the camera

Thanks!

C.S.I. wrote in post #6124488
I wish this thread would just die . Where does it state this, DUDE. It states that "the sensor has a self cleaning sensor unit attached to the sensor's front layer to shake off dust automatically". It also states "Whenever you set the power switch to <on> or <off>the self cleaning sensor unit operates to automatically shake off the dust on the front of the sensor.

Can you direct me where it states that it has nothing to do whether there is dust on the sensor or not, because I dont see it.

I am now aware that there is not a problem regarding the sensor on my 40D. I'm just sick of "read the manual" replies....No wonder people in here have 20,000 posts in one years time. If you ask me, it doesnt state it cleans whether or not theres dust, but that just my interpretation........

That's my point.

In an effort to be constructive: No where in the manual does it say it DETECTS whether there is dust or not. It says it automatically self-cleans when the power is switched on. Your previous post indicated you belief that the notice of sensor cleaning meant the camera has dust on the sensor right out of the box, which may or may not be true. I'm simply trying to prevent a new urban legend from starting and dispel ignorance.