On Thu, 25 Nov 2004 09:30:03 -0500, cbwaters wrote: >I have a hair on my sensor. I tired blowing it off with a squeeze puffer to >no avail. I couldn't tell if it moved at all. What can I do to get rid of >it? >CW >great, hair leaving my head and going where I don't want it. growing older >sucks...
It is almost certainly stuck there with oil - you may even be able to see it. To best see the dust/hair on your sensor put on a lens and set it to at least f22 (f32 if it has it). Point it at white surface and move the camera during exposure to blur any imperfections in the surface. You should now have a sharp picture of all the dust on your sensor. I had a fine hair on my sensor once and had it professionally cleaned by Pentax (well CR Kennedy who pass as Pentax in Australia). They use "dry" nitrogen to clean the sensor. Dry nitrogen is almost pure nitrogen (99.98% I think) with less than about 10 parts per million of moisture. Canned air can have a lot of moisture which can either freeze on the sensor (or AA filter actually) if it's under too much pressure. I use a combination of canned CO2 and Pec Pads on a stick with Eclipse cleaning fluid, which seems to work ok - I gave thought to a dry nitrogen set up but it costs a fair amount to set up. Blower bulbs and vacuum setups bring in air from outside the camera and that is generally full of dust which make it had to not make the dust problem worse. Hope this has provided some helpful information. Leon http://www.bluering.org.au http://www.bluering.org.au/leon
