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DPChallenge Forums >> Hardware and Software >> DSLR Cleaning Question
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Nikon Z9
Nikon AF-S NIKKOR 24-70mm f/2.8G ED
 08/20/2003 11:30:21 AM · #1
I have had a pesky spec of something on my D100 nearly as long as I've had the camera. I can even see it when I look through the viewfinder. I have had the CCD cleaned, and that's apparently NOT where this spec is (I'm thinking that since I can see it while looking through the viewfinder, it can't be on the CCD in the first place).

It's also not on the lens itself (I can see it through the viewfinder without a lens being on the camera).

Just wondering where I should focus my efforts here. It has been driving me batty for a long time, and I'd love to get rid of it somehow or other...

Would it be on the mirror...?
Canon EOS-D60
 08/20/2003 11:32:29 AM · #2
Could very well be the mirror if your seeing it thru the viewfinder.
Nikon Z9
Nikon AF-S NIKKOR 24-70mm f/2.8G ED
 08/20/2003 11:37:13 AM · #3
If that's the case, should I be looking at the mirror that you see straight on while looking into the camera? In other words, the mirror that is tilted at a 45 degree angle. Obviously I'm not too literate on the innards of the camera :)

What would be the best approach to cleaning it? Would a Q-tip and rubbing alcohol be a good idea, or a huge sin?
Canon EOS-D60
 08/20/2003 11:45:01 AM · #4
Heres some more on the topic of mirror cleaning from Photnet, personally I have used isopropanol alcohol and a q-tip on my old film SLR. I havent cleaned the D60 yet, other than using a squeeze bulb blower.
Nikon Z9
Nikon AF-S NIKKOR 24-70mm f/2.8G ED
 08/20/2003 12:09:18 PM · #5
Thanks -- I appreciate the help!
RIM BlackBerry Curve
Canon EF 85mm f/1.8 USM
 08/20/2003 12:11:27 PM · #6
It could well be on the 'focus screen' as well - I had fluff/ lint there and it was driving me insane.

This is the viewing element that has the focus squares/ lights on it - you should be able to see it directly 'up' from the mirror as you look into the camera without a lens mounted.

Manual squeezy air blowers (not compressed air unless you are really sure it doesn't carry a propellant) can be used to dislodge stuff.

Q-Tips are not a good idea as I found to my frustration - they tend to drop fibers behind them, even when coated in a solvent.
RIM BlackBerry Curve
Canon EF 85mm f/1.8 USM
 08/20/2003 12:12:32 PM · #7
another link on cleaning

//www.luminous-landscape.com/essays/sensor-cleaning.shtml
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