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Sensor Dust Help

Paulinbna From United States, joined Feb 2003, 1081 posts, RR: 8
Posted (6 years 3 weeks 3 days 6 hours ago) and read 464 times:

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I bought some sensor swaps and Eclipse liquid and after 4 trys I finally got the hang of it and cleaned the sensor now I would like to now some suggestions on how to check for dust by taking a picture. I tried to take a picture of a white sheet of paper but I could never get the paper in Focus enough to see any dust that I knew was there. The reason I am asking is that I took some picture of junked aircraft at Smyrna airport

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Photo © Paul Robbins

and it was over cast as you can see. But the sensor had a lot of dust on it.
I cloned out the dust but I would like to know about test pictures before I go out.

Paul

Canon 20D user; 100-400 MM L IS 10-22 MM

8 replies: All unread, jump to last

JeffM From United States, joined May 2005, 3247 posts, RR: 58
Reply 1, posted (6 years 3 weeks 3 days 5 hours ago) and read 429 times:

Just take a picture of the sky using a small f stop like F22. If you have dust you will see it. You will probably see it in the lcd if you zoom in on it during preview. Why couldn't you focus on the white paper?

Jeff

Paulinbna From United States, joined Feb 2003, 1081 posts, RR: 8
Reply 2, posted (6 years 3 weeks 3 days 5 hours ago) and read 421 times:

The camera would not for some reason focus on the white paper,

Paul

Canon 20D user; 100-400 MM L IS 10-22 MM

Chrisair From United States, joined Sep 2000, 773 posts, RR: 6
Reply 3, posted (6 years 3 weeks 3 days 2 hours ago) and read 402 times:

Why don't you throw your camera to MF and shoot the paper? If the dust is there, it'll show up. It doesn't matter if the paper is focused or not, besides you're not focusing on the dust spots anyway, those are behind the lens (one would hope).

-cc

737heavy From United Kingdom, joined Apr 2002, 601 posts, RR: 4
Reply 4, posted (6 years 3 weeks 2 days 22 hours ago) and read 374 times:

I wouldn't worry too much about sensor dust. As someone on his 2nd 10D and still with a dust problem I just decided to drill a hole in the bottom and let it fall out. Big grin

Problem I found with cleaning the sensor was that after cleaning it was great but when used in 'the real world' it would dirt up again. However oddly enough I went out in September and took a few hundred shots all of which had marks. I went out today and I've just checked the images and the only spots were caused by the little flying bugs. All the dust spots seem to have gone even though I'm using the same f numbers.

Odd, maybe I've finally got a body as good as the D60 I had.

Regards

Lee

Granite From United Kingdom (Scotland), joined May 1999, 5364 posts, RR: 76
Reply 5, posted (6 years 3 weeks 2 days 21 hours ago) and read 367 times:

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PHOTO SCREENER

Hi all

Still on my two year old D30 (hey, it's her birthday next month) and no real problems with sensor dust.

My advise is to get a Speckgrabber and if you cannot see the dust on the sensor when viewing at a window..leave as is.

Any dust, if visible, can be cloned out.

''If it ain't broke, don't fix it''

Cheers

Gary Watt
Aberdeen, Scotland

Airliners.net

Craigy From United Kingdom, joined Jun 2001, 1118 posts, RR: 0
Reply 6, posted (6 years 3 weeks 2 days 21 hours ago) and read 360 times:

Lee,

Very odd indeed. I spent a couple of hours at the MAN 06R threshold this morning and all my shots are totally dust free. I have had a couple of bad dust spots for a few months which I have been cloning out, but today they are nowhere to be seen. I am still shooting at 1/500 f8 - no change there. The only thing I can think of is that it must be temperature related.

What fantastic shooting conditions today.

Regards,
Craig.

737heavy From United Kingdom, joined Apr 2002, 601 posts, RR: 4
Reply 7, posted (6 years 3 weeks 2 days 20 hours ago) and read 374 times:

It certainly was a good day, however I ended up getting stuck with Silgrim, my own fault really for calling him a saddo. Smile/happy/getting dizzy

I have a Speckgrabber but when I used it it left a nice mark which I had to clean off.

Regards

Lee

JeffM From United States, joined May 2005, 3247 posts, RR: 58
Reply 8, posted (6 years 3 weeks 2 days 20 hours ago) and read 369 times:

Why clone it when you can clean it? If the dust is visible to your eye, just think how much is in there that you can't see.

It doubt this is caused by all my years as a sailor, but I say SWAB it. Smile

~Jeff

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