Originally posted by automorphism I think the dust removal feature is pretty much useless. Someone did a good test somewhere of this with various camera brands and most don't work. I've tested the feature on my K-50 and it did nothing. Though, I just left it there because it's invisible in the majority of pictures I take.
Anyway, have you done before and after tests with your cleaning method? Maybe the dust removal by air is not as effective on the K1 and you're just moving it around, and every week you just notice it on certain types of shots?
A typical cleaning process is:
- See someting in a normal picture
- Take a Test-shot against a uniform object - moving the camera heavily (because sensor check is missing in the K-1)
- If there is something "sharp" in the picture it is on the sensor, otherwise it would move in the picture
- Do a sensor cleaning with air Blower
- remove optics
- Turn the Bajonet towards the floor
- select sensor clean
- Blow from below into the camera with a clean dustfree air blower several times
- Switch the camera off
- do again the sensor check
- repeat from the top if there is still on the picture. With the K20D there was one case that Ii needed 3 runs to remove all others where on or two.
Therefore I didn't consider this useless.
It's nice to come home knowing there is nothing to clean after a trip, some of my collegs have to clean there sensor nearly after every shooting (But that are not pentaxians).