Originally posted by blackcloudbrew I have this probelm too on my k10d. It started after a week in Death Valley.
I suggest that you get yourself one of these:
Delkin Devices - Products - SensorScope System
I was a little timd at first but it does the job. The really good part of it is the lighted lens that you can view the surface of the sensor with and the cool mini vacuum. Check it out.
I was told at a pro camera shop that it's the same system they use to clean customer's cameras.
Tim
I may have to purchase a sensor, as I cannot see anything and I do suspect my 16-45 lens, but I will check to make sure. I was offered the Arctic Butterfly Kit, but at almost 180$ Canadian, I bought just the swabs and cleaner. Thanks for the suggestion.
Originally posted by mactrash Open your web browser with a blank page, so there should be a big white area.
Shoot the white area (computer screen) with any len @ F22 in AV mode +1.5 - 2 EV, it should take secounds to expouse, while expouse move your camera slowly to left and right randomly so it will not capture the dust or the mouse cursor by accident.
Then put the JPG / RAW file in your post production system, and find out where is the dust. remember the area will be mirrored in your sensor!!
Use the Pentax gel pen is a good option, Long time ago I do use liquid solution, but it's very easy to remain something over the sensor. Now I just use dry solutions.
Thanks also, I will try that.
Originally posted by Marc Sabatella Since someone else just mentioned not having realized this, I should ask - you *are* using the sensor cleaning mode so you can actually see the sensor, not the mirror, right?
Anyhow, I find light makes all the difference in seeing dust on the sensor. Sometimes I can't get light bright enough indoors, but the sun usually reveals all. If not, then something like the sensor scope might make sense. Because that's definitely sensor dust, not anything on the lens. Lens dust never shows up that sharp. If you havbe ay doubts, try another lens, but it's unlikely to change anything. Assuming it is on the sensor, the spot will show up any time you shoot at a high enough f-stop.
Yes, I raised the mirror and cleaned the sensor at least three times in four days, but I keep getting this dust. I will have to try the 50-200, because I suspect the lens, but I think you are right, perhaps I just can't see it. BTW I did look oudoors in sunlight.
JMR