Originally posted by dbh Decided to check for dust yesterday. Took an out of focus shot at f/22 of the grey overcast sky - and proceeded to pixel-peep. Pretty soon: Ah hah! A dark spot. Gave it the dust-removal shake - still there. Gave it a blow - still there.
Jeez, I wish I had to go through some sort of voodoo sequence to see it. Don't even have a hundred snaps on the shutter and - TaDaaaaa - a spot as big as a freaking lump of coal shows up in the viewfinder while out doing a panorama series of a wetland for the wife. One shot it wasn't there, the next instant there it was, ugly as sin.
Not during a lens change, but one or two pictures afterwards. Come to think of it, the camera may still have been powered up when I did the lens change. I don't suppose that would have helped any, having the sensor energized...
As I was about done I headed for home, hoping it was just the lens. Take the lens off... nope, still there. Well, maybe the mirror/viewfinder. Stop down and take some pics of a white sheet of paper. There it is, all big and ugly - so that eliminates the mirror and viewfinder. Try the sensor shake n' bake cleaning routine about 30 or 40 times. Nope, she's stuck on there (not that I really thought a vibrating sensor would be likely to shake off a piece of dust electrostatically glued to the censor surface when the dust has about nothing for mass).
So a quick search on here finds a few people who have never had a dust problem. It seems the rest of us have to deal with dust, so I guess I have three options.
- Do the touchup routine for picture after picture as part of post processing.
Well, boring, and not something I want to do all the time instead of eliminating the problem. Of course, eventually there's TWO noticeable dust spots, then three, then four, etc. I also suspect they tend to glue themselves to the sensor with the passage of time, if allowed to sit there indefinitely. - Take the camera to a shop for cleaning.
Not a bad idea, but none around here and I suspect it is kind of spendy to do that just for a dust spot. - Buy the means and learn how to clean my sensor.
Aside from nightmares about damaging the sensor/camera, this seems the most logical solution.
Option 3 sounds the best. So I try the blower fix first. The actual camera blower brush I have is pretty anemic to begin with. I have no idea what stuff is being carried on that brush right now so I forgo that. Out of the kitchen comes the high tech turkey baster. Check to make sure it's nice and clean. Screw the marinading needle on the end - that gives a very nice directional flow of air indeed. Give 'er a couple of blasts - the lump of coal is still there in the viewfinder. Bummer...
So, I guess I'm now in the market for sensor cleaning tools and methods. My default position would be to use that new tool seen on the web as supposedly Pentax's cleaning solution, but it doesn't seem to be readily available for sale.
There's a tiny little camera shop that looks more like a pawn shop a bit down the way. I'll drop by there tomorrow to see what they have, but I suspect I'm out of luck and I'm back to Internet shopping again for a heavy duty blower and a wet cleaning solution. After browsing around the Web for a couple of hours, Copperhill Images seems like at least as good a choice as anything else, and possibly better. They offer a kit with a Sensorsweep brush and Sensorswipe tools with Eclipse 2 solution for cleaning the Pentax sensors:
Copper Hill Images Wet/Dry Cleaning Kit w/Eclipse 2 for Pentax
Anyone have any feedback on the Copperhill remarketed products and cleaning instructions before I shoot off an order?
This is a BIG chunk of dust... I hope this isn't a case of the camera having to go to a Pentax service center. That would really suck.