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The lens that the patient looks through has dust particles on the inner lens. We used compressed air and were able to clear some of the particles but some remain.Can this lens be easily removed and cl

Is there a way to easily remove this lens for cleaning?

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When capturing picture in open-air at time of night.... my dmc f3 cam shows spots in picture spots if dust particles present in the air which spoil the look of picture :( plz help

If these are flash pictures, you are experiencing dust particles in the air reflecting the flash back into the camera lens. This is a problem with point and shoot cameras because the flash is so close to the lens.

Mar 13, 2011 | Panasonic Lumix DMC F3 Digital Camera


Cleaning your Keyoard


This is a tip explaining exactly what steps you you should follow if you would like to Clean your keyboard. What usually happens, is that keys get stuck, due to dust particles or faulty rubbesr under the keys itself.

Before we start cleaning, you need to shut down your computer and unplug your keyboard from either the USB slot, or the PS2 port.

Now, you will need:
  • Some Spirits/alcohol
  • Cotton swabs
  • high static cloth/cleaning cloth
  • Vacuum or compressed air
  • Clean, soft paint brush
  • And lastly, some patients..

Ok, the first step will be to place your keyboard in front of you on a level surface.


Now, either use a vacuum or some compressed air to ****/blow out the particles beneath the keys. If you use a vacuum or compressed air, turn the keyboard downwards so that gravity will pull the particles down as well.

Step 2:

When you are done removing the particles underneath the keys, place the keyboard on a flat surface like figure 1. Now you will need to dip the cotton swabs into the alcohol or spirits and clean the tiny spaces between each key.


Step 3:

Now, after you have claened all the tiny spaces between the keys as seen in figure 2, i usually use a regular soft paint brush and just brush off the whole keyboard, at the side of the keys, as well as the bottom side.


Step 4:

Lastly, take the cleaning cloth and put some alcohol on it. Now wipe clean the whole keyboard after you have completed the abovementioned steps.


Now, you are done. Just plug the keyboard back in, and start up your computer. I always keep my soft paint brush near, to minimize the dust builup on the keyboard between cleaning periods.

Hope you can find this helpfull and rate acordingly.

Kind regards

on Feb 23, 2010 | Computers & Internet

1 Answer

Hi i am wondering how i can clean or even get into my proxima ultralight lx2 , its 10 years old now and the inner two or three lenses need cleaning as the picture is showing up some dust , i was thinking...

The lens should be pretty sealed up. Use some compressed air, and a lens cleaner on the front of the unit, and see how that goes. If it needs further service of the lens you may need to bring it to a professional.

Feb 28, 2011 | InFocus Proxima UltraLight LX2 Multimedia...

4 Answers

Dust spots on images

this will give you the idea how to clean the lens and have lens cover which is available in market to protect it from dust

thank you

Sep 22, 2009 | Leica M8 Digital Camera

1 Answer

Doesn't read disks

Clean the lens.

Use a lens cleaner, looks like a cd with brushes on it or use compressed air in a can to blow the dust off lens. If you pull the power cord as the tray is opening, you can easily point the compressed air at the lens.

Sep 05, 2009 | Microsoft Xbox 360 Console

1 Answer


Purchase a can of compressed air from Home Depot, Lowes, or your local hardware store. Read the directions on the can first and then hit your lens with the air while rotating the camera. You probably have a particle of dirt or dust caught in the lens area.

Good Luck,


Jul 09, 2009 | Canon Cameras

1 Answer

Sd400 lens won't close..turns on for aseveral seconds then shuts off...

Hi, common problem with these, basically some dust particles have become trapped in the shutter or the rails on which the shutter runs on. A quich blast of pc dust cleaner or similar compressed air cleaner will shift it. No need to open any parts of the camera, f you do, you will void your warranty if it is still valid.

Oct 02, 2008 | Canon PowerShot SD400 / IXUS 50 Digital...

1 Answer

My projector Benq pb6200 needs cleaning from the inside how???

I have an Optoma EzPro 737 DLP projector that accumulated dust inside the lens and for ages I couldn't figure out how to get rid of it. It cast shadows onto the picture and scattered light outside the edges of the picture. I thought I'd have to dismantle the whole lens assembly (then realised that this is virtually impossible without being an expert). I then stumbled upon a little black rubbery plastic panel on the side of the light path, which unclips. I then realised that the dust had built up on the lens that sits in front of the DMD chip (the thing that makes the picture).

Here's what I did, with the case open and having vaccuumed out all the dusty parts of the projector to avoid making the situation worse:
- Took off the little rubbery panel,
- Removed the lamp from the projector and placed a flashlight inside, shining into the light path (or a mirror directing light from a table lamp above)
- Looking directly into the lens from close up, you should be able to see the particles of dust stuck to the inner lens (with a nice magnified view)
- First tried blowing air into the gap on the side of the light path (I used a balloon pump).
- Next, I poked a piece of thick nylon fishing line into the hole so that it could touch the surface of the inner lens.
- While looking into the lens, I could see the tip of the nylon, then directed it to the largest dust particles and used it to scrape them off (nylon is much softer than glass, so won't scratch the lens).
- This was quite time consuming but I got rid of the most obvious bits.

I'm not sure how different this would be for another model of projector - but I hope it helps!

Dec 16, 2007 | BenQ (200NSH-LAMP) Projector Lamp for...

1 Answer

Cleaning the inside lens

To access the inner optics on these compact digital cameras the lens must be disassembled from the inside out. Usually the camera casing has to be removed, boards and connections moved out of the way, and the lens assembly actually removed from the camera. At that point the lens can be taken apart and the inner optics accessed. In other words, yes, this is a job for a professional. It is also probably not worth the cost just for a couple specs of dust. These lenses are not sealed. This is why the dust gets in there to start with. If you get a can of compressed air and carefully blow into the gaps between the lens parts in different directions somtimes you can get enough air through to blow off the inner lenses. This does not often work though. David Millier Advance Camera Repair

Mar 12, 2007 | Sony Cyber-Shot DSC-P150 Digital Camera

1 Answer

Dust Behind Lens on F707

That's odd. I had the 707 (may she rest in God's eternal peace), and never thought that dust could get behind the lens. Do you see the dust when you look through the EVF, or when you look at the lens itself? Either way, one way to test it is to set the camera to the smallest aperture (f/8), infinity focus, and shoot a clear blue sky. Open the picture in your editor program, and see if the dust shows up. That's a technique to use with an SLR to see if the dust inside would affect a picture, so I'm not sure if this will work with the 707.

Sep 12, 2005 | Sony Cyber-Shot DSC-F707 Digital Camera

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