Try changing batteries.
When you add a camera lens to a camera, it does not make the shutter go faster. If the camera has a manual way to adjust the shutter speed, that is how it changes.
Lens errors are fairly common. Usually it's sand or grit interfering with the lens extension mechanism. Or the camera's been dropped with the lens extended. Or the camera has been powered on, but the lens had been blocked preventing its extension. Or the battery ran down with the lens extended ... Also you can try twisting the camera lens clockwise gently and it will go down. Do not push it down or else you will break it. Then try turning it on. It might work. There are several things that you can do to try to correct it. These home fixes seem to work for less than 50% of the lens errors. If the camera is out of warranty, they're worth a try. See the below related link "Fixing a Lens Error on a Digital Camera":
Kodak is known for everything to do with cameras. They make high quality camera equipment as well. There are other, better brands, but you cannot go wrong with a Kodak lens.
When you go on an Alaskan cruise, take a camera with a zoom lens. You might not be able to get close enough to some of the mountains to take good pictures, but with a zoom lens, you can get great shots of the snow caps.
It is focussed by a lens (a sort of high-spec magnifying glass).
There are many "How to " videos on the internet. These videos show you step by step lens assembly.
I would go with the 10 mp Samsug, because it's better quality. However I have a camera with a Carl Zeiss lens and it's very good. Bottom line they're both great quality but I would go with the second one.
Go to the store that you brought the device and ask them to repair your back camera
Yes, you can rent a lens for your Sony camera at Lens Rentals.com. They have wide angle, normal range, telephoto, supertelephoto, macro and speciality lenses. Go here for more infomration: http://www.lensrentals.com/rent/sony/lenses. You can also try borrowlenses.com
There are repair kits available for purchase, and they may fix your lens, depending on how bad the crack is. Although, if you do not want to go to that trouble, you can purchase a brand new camera for quite a low cost!
because your computer doesnt have a camara
On the back of the iPad, I would use a SLIGHTLY moistened Mr. Clean Magic Eraser. Make sure no drips go into the camera lens, buttons or the dock connector.