I've had this camera since it was launched 3 years ago, never had probs with dirt on the sensor so did'nt bother to do a cleanup.

Anyways, I'm fiddling about in the nenu settings today and I noticed there's a sensor cleaning function in there never knew that so I did the cleanup.

lol it's cool/exciting when you find little things like that isn't it!?

It's definitely a boy thing!

Honestly - Boys and their toys

The sensor clean function on the 350D only activates the mirror lock up though, you still have to clean the sensor yourself unfortunately

lol that's typical... we get excited over nothing half the time

I thought about that G, but there's a separate selection in the menu for mirror lockup, when I selected "clean sensor" i had 2 options, "cancel or ok" I selected OK then waited for a bit, stuck the camera to my lug-hole to hear if anything was going on but could'nt hear a thing.

I have a 30D with the same option, all it does is mirror lockup and make sure the shutter stays open + lowers the voltage going to the sensor (to stop it attracting dust while cleaning) so Yes u still need to do it manually (when i first saw it i got exited 2)

Sensor clean locks up the mirror and allows you to clean the sensor (but disables the other functions so you can not take a picture).

Mirror lock up allows you to use the feature when taking a picture.

HTH

Ah 'Em

Yep, you were right G, I found the manual this morning it is only a lockup feature to enable you to clean the sensor, also, they don't recommend using compressed air, only use a rubber bulb type blower without a brush on it.

Thanks for the info G, it made me search for the manual.