A bubble in the glass of a camera lens is called a bubble, because that's what it is: if the glassmaker pours molten glass into molds, waits for it to harden then grinds and polishes the lenses to...
Yes, there are different camera lens' for different cameras. Not all cameras have different camera lens' though and that is because they have an automatic focus. A more detailed and expensive camera...
It might work, it might not, but if you hold the frame steady, gently push it in with increasing amount of force but make sure to hold both sides of the lens or it will pop through the frame. there...