K20 dust alert system

Hi all i just wondered what everyone thought about the k20 dust alert system. Where the camera takes a jpeg of the sensor.

How accurate is it ?

I find myself using this system after every lens change after purchasing the DA's 16-45mm and 55-300mm last week and have changed lenses a few times.

It seems like a great system but i'm new to the k20 so the seasoned users might think its poor.

All replies welcome

No need to keep doing it after each change I myself never used it, the only thing I have set is at start up, when you switch the camera on it shakes the sensor

That's dust removal tel, not dust mapping.

Ok Ta!

Never done dust mapping as never had dust on the sensor

When there was dirt it showed the position correctly. The dust remover could not remove it, but the image helped me to find it with a magnifier and was able to remove it with air.

Luckily, it happened only once... (so far )

Laszlo

Dust Alert is useful, but bear in mind that it can give weird false postive results sometimes. Point the camera at something else and try again if in doubt, or do a manual test (white sheet of paper @ f16, + 1 EV, iso 100).

Dust Alert (and manual test at f16) also doesn't detect the smallest specks of dust, but that's a good thing to save you getting paranoid!

for me the sensor shake seems to work perfectly. After allmost a year there is still no dust on the sensor.
On the other hand, I only cleaned my DS two times with a Arctic Butterfly, I never had stubborn dirt on that one and since the K20D has a coated filter it will stay clean for a lot longer.
I don't use the sensor shake with power on, I only use it periodically.