I THINK SEA WATER HAS GOT INTO MY CAMERA AS THE FLASH KEEPS GOING OFF THE LENS KEEPS MOVING IN AND OUT ALSO THE SCREEN IS FOGGY. PLEASE COULD YOU HELP IF YOU KNOW HOW TO RECTIFY THIS PROBLEM

Yes, the lens can be disassembled and cleaned. But before you think about doing so, think about this. Do you have a lens collimator and other equipment necessary to ensure proper alignment on reassembly? If you don't, please leave inside cleaning to a trained professional.

I know it may sound like the shutter is moving, but you're going to have to actually look down the lens barrel to confirm it's actually moving, and not just producing a sound effect from the camera. Also keep in mind Canon's SX IS series cameras are notorious for the following problem (fantastic cameras otherwise).
A stuck shutter is another common failure mode for digital cameras. The symptoms of a stuck or "sticky" shutter are very similar to CCD image sensor failure. The camera may take black pictures (for shutter stuck closed), or the pictures may be very bright and overexposed, sometimes with lines, especially when taken outdoors (for shutter stuck open). To confirm a stuck shutter, put the camera in any mode other than "Auto", and turn the flash OFF (you don't want to blind yourself for the next step). Next look down the lens and take a picture. You should see a tiny flicker in the center of the lens as the shutter opens and closes. If no movement is seen, then you likely have a stuck shutter. If so, please see this link for further info and a simple fix that may help.

Hello

The problem is that the lens has become stuck in the barrel after dropping it. There are some DIY solutions you could try, but the probability is that you will have to get it fixed by a professional.

Use these at own risk as it may further damage the camera.

Firstly , try connecting your ac adapter or usb cable.

Try holding the shutter button while switching on the camera.

Look at the lens , and if some of the lens 'circles' is misaligned or not concentric then try wiggling it (while holding camera lens down).

Try gently pushing or pulling the lens when it extends but this is risky as it may cause the lens barrel to slip out of its guidance system.

Another way to do this is to place the camera lens down on a hard surface and then power it up. Be sure to use a soft cloth or something similar as to not scratch your lens or casing. Let the lens push the camera up and down a few times and sometimes the little resistance provided by the camera is enough to get things going again.

Try hitting your camera near the lens on the body with the soft tissue on the palm of your hand.

Other than that , I would take the camera to a repair center for a evaluation to see if it would cost more to repair than to replace the camera.

If it is still under warranty I would suggest you take it in before trying any of these steps and remove any off-brand batteries or accessories as some stores are really fussy about warranty repairs on camera's with non-brand accessories.

Hope the advise is useful.

Regards
Andrea

is screen is foggy/image formation is foggy,chaque the lens unit

rotate the lens in order to focus objects in front of it
(lens is the purple part looking like a ring on the front of the cam)

you should have dropped the camrer down at least once. you have to replace the lens array.it costs around 60$.

the gears within the lens housing are broken. flat rate if sent to sony usually is about 150 i know its almost the price you paid.

i kept the camera on, that means the lens was open too..........after a good 4-5hours later when i checked it was back to ''foggy'', and another few hours later it was back to normal.........hurrah!!

The 40D is not a water resistant camera body. It is VERY important to keep it from getting wet, even "just a little mist".

The first thing you need to do is remove the battery, and the lens. Then let the camera dry out in a warm and not-humid location for a few days. Do NOT try to power it up until you are 100% certain that it is dry.

The water at Sea World has salt in it. You may have salt in an electrical connection, even after the water has dried. You can try using a swab very lightly moistened with rubbing alcohol to dry the connections you can reach - the battery connection and the connections between the camera body and the lens (clean the connections on the lens as well as the camera body). Then let the camera dry AGAIN for at least 24 hours before you reattach the lens and insert the battery.

If these do not fix the camera then you will need to send it in to Canon for cleaning and refurbishing.

That depens if the fog is inside or outside, outside it usually dries faster than inside. You are advised to let it dry at least another 24 hours , if the lens is still foggy after that , thab you must go to a repair shop to let it be cleaned.