If the temperature outdoors is high enough and the weather is humid, then condensation can form inside a camera. This will happen when the camera is brought from a hot area to a cooler area, such as bringing the camera indoors after it has been in the heat outside.
As mentioned, the condensation will form inside the camera. This means that it has a chance of forming on the inside of the camera lens. This will cause fog to form and prevent the camera from being able to take clear images. Not only can it cloud a lens, but excessive condensation can also cause a camera to short circuit, as the moisture comes into contact with the internal circuits.
To protect the camera from condensation occurring, use a soft, dry clean cloth to remove moisture from exterior surfaces. If possible, place the equipment in a dry, well-ventilated area to prevent further condensation from forming.