I realized today I have some pretty bad dust on the sensor, based on evals of pics taken with my new lens. Had it a few weeks I see now looking @ older pics. One bad one that was very visible in pictures. Thought @ 1st could'a been the lens. I changed it and dust remained exactly where it was befpre. I notice now I have it all over my screen or mirror too, and won't blow/vacuum off (I know it's the screen/mirror because it's dark spots that don't show up on the pictures taken).
Tried air pump and vacuum. Got rid of the big one but put a lot more smaller particles on the sensor (I know because I used different lenses to test and particles stay in one spot.) Hoping that at least the smaller ones will not be as visible in pix.
It's led me to the conclusion that dust removal from the sensor doesn't do too much if anything at all.
You?
You know of any good reliable service to clean Pentax (if it matters) sensors and other internals reliably? I won't be able to use it before my trip to Africa. I'm 100% sure I'll need a good clean-out after anyway with all the dust people say is there.
If you don't know how to test for it, put your camera on Manual, smallest aperture opening, point up at a clear cloudless sky, set exposure time to give you 0 to +1 (or +2 perhaps even) exposure meter, and shoot it. Shoot a couple @ different exposures. Dust will display as dark spots that don't move as you switch from pic to pic.