This might be a rather silly question, but does the focal length have any relation to the field of view at all?
For example, the new carl zeiss 18mm lens has a fov of 99 degrees diagonally, while a normal canon 18-55mm has a fov of 74 degrees (i assume diagonally too). If so, does that mean that even at the same focal length, I can see more with the carl zeiss lens attached?
So in that respect, the focal length is actually not the most accurate judge of how wide a lens can cover, right?
For example, the new carl zeiss 18mm lens has a fov of 99 degrees diagonally, while a normal canon 18-55mm has a fov of 74 degrees (i assume diagonally too). If so, does that mean that even at the same focal length, I can see more with the carl zeiss lens attached?
So in that respect, the focal length is actually not the most accurate judge of how wide a lens can cover, right?