Well after painfully cleaning all my lenses, I have decided that the spec I have that appears from time to time is dust on my cmos...

So if you have dark grey blobs etc then have a read here, I know Geoff posted up somthing similar ages ago, but as I know a lot of dSLR's owners are reading, it's worth considering. However I take no responsbility for your mistakes or damage etc etc...

What does dust look like?

http://www.exobee.co.uk/gallery/d/559-2/IMG_4664.JPG

and

http://www.exobee.co.uk/gallery/d/563-2/IMG_4031.JPG

Look for the dark grey / black dots out of place.

So how do I remedy...

Firstly THE site on this:

http://www.pbase.com/copperhill/ccd_cleaning

The item it refers to, just ordered:

http://chili-pix.ch/shop/product_info.php?currency=EUR&products_id=34

Hopefully I can resolve the nagging spec I've had for ages...might aswell give it a go since I tempted to beg and borrow for a 20d anyway.

I got smoke machine fluid all over my lens from trying to be arty and that was a bugger to clean off.

There's a huge one in the second pic that looks like a fingerprint! :eek:

Nope thats a bit of sea water or salt/crap...

Was just down on the water's edge of the most westerly point on the mainland, suspect I picked it up scrambing back...or it's an odd refraction as the 2nd shot of this does not have it.

Dust......anyone? no? Dust......anyone? no? Dust......anyone? no? Dust......anyone? no? Dust.....

I couldnt help it:ashamed:

I remember Geoffs original posting, and thinking I hope that I dont end up with dust in E300.

Yep, been what I think as fairly careful...okay they are not as robust as good old fashioned film cameras.

Has taken 4k of pics to get contaminated, which isn't too bad.

Going to give it another good air dustng, done this a few times and it keeps coming back, now it seems well stuck.

Ack well, try nothing, learn nothing. One plus is I'v foun some new RAW processing software; yay can go back to raw mode.

Hi

I use a cheap nylon miniature blusher brush to remove sensor dust. I just blow it clean with dry clean air (from a dive cylinder) and brush around the sensor and surrounding area. The dry air makes the brush very statically charged and dust seems to stick to it well.

Only proviso is you must test on a bit of flat glass first to ensure that there are no residues coming off the brush and that no abraision takes place.

IIRC, the brush cost

Thats the one Pixmantec, quite good aswell, even compared to the *paid* options.

http://www.pixmantec.com/index2.html

Good one re the dry air charging the makeup brush. I suspect my blower is just moving dust, which eventually comes back :(

Wonder if a dive centre will make up some small bottols, say half litre for the holidays

Wonder if a dive centre will make up some small bottols' date=' say half litre for the holidays [/quote']

Hi Colin

You can get a buddy bottle about 0.5L for around half the the cost of a visible dust brush kit. Will cost you around a pound to refill and will need inspecting every 5 years.

Chris

I use a cheap nylon miniature blusher brush to remove sensor dust. I just blow it clean with dry clean air (from a dive cylinder) and brush around the sensor and surrounding area. The dry air makes the brush very statically charged and dust seems to stick to it well.

Yep..the brush approach works OK for me too. This article explains it well:

http://194.100.88.243/petteri/pont/How_to/a_Brush_Your_Sensor/a_Brush_Your_Sensor.html

Ian

Hi

I use a cheap nylon miniature blusher brush to remove sensor dust. I just blow it clean with dry clean air (from a dive cylinder) and brush around the sensor and surrounding area. The dry air makes the brush very statically charged and dust seems to stick to it well.

Only proviso is you must test on a bit of flat glass first to ensure that there are no residues coming off the brush and that no abraision takes place.

IIRC, the brush cost