In eye and camera convex lens is used,inverted image is eye image can be formed infront or back of the rectina ie the screen of the eye. it can rectified by using convex or concave lens of suitable power. we cant take the print of the image formed in the eye.but photos can taken from the camera.normaly the image of the object remains in the eye for 1/16th of a second.this is not possible in acamera.inverted image formed 0n the rectina of the eye is connverted into erect by using optic nerves and brain.but in camera its by some mechanical application