UFCEKT-20-33D Modelling and Animation 3D Modelling & Animation Cameras.

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Presentation transcript:

UFCEKT-20-33D Modelling and Animation 3D Modelling & Animation Cameras

UFCEKT-20-33D Modelling and Animation Agenda Maya Camera Principles and Photographic Concepts Camera Types Camera Attributes Movement of Cameras Image Planes Clipping Planes

UFCEKT-20-33D Modelling and Animation Camera Principles SceneImage Pinhole Camera Resulting image is mirrored and inverted Small aperture results in very long exposures Light Rays

UFCEKT-20-33D Modelling and Animation Camera Principles SceneImage Pinhole Camera Increasing the pinhole size provides more light to shorten exposure times but introduces distortion of light rays resulting in poor image quality Light Rays

UFCEKT-20-33D Modelling and Animation Cameras Principles SceneImage Simple Lens Simple lens refracts light to reduce distortions Light Rays

UFCEKT-20-33D Modelling and Animation Cameras Principles SceneImage Compound Lens Compound lens designed to control variety of lens aberrations which effect both image sharpness and colour Light Rays

UFCEKT-20-33D Modelling and Animation Maya Cameras - 35mm

UFCEKT-20-33D Modelling and Animation Physical Lens Features Base format - The size of the negative / film gate e.g. 35mm - Medium Format - Large Format Focal Length Aperture Depth of Field Lens aberrations (flare)

UFCEKT-20-33D Modelling and Animation Angle of View for 35mm Shorter focal length lenses have angle of view which gives steeper perspective Longer focal length lenses have narrow angle of view which gives flatter perspective 50mm provides natural perspective for the 35mm format

UFCEKT-20-33D Modelling and Animation Aperture & Depth of Field

UFCEKT-20-33D Modelling and Animation Aperture & Depth of Field

UFCEKT-20-33D Modelling and Animation Aperture & Depth of Field

UFCEKT-20-33D Modelling and Animation Maya Cameras Based on 35mm photography Always in focus No given depth of field No aberrations e.g lens flare Need to create above effects when required

UFCEKT-20-33D Modelling and Animation Maya Types Camera - standalone camera Camera and Aim - camera with aim to direct at point of interest Camera Aim and Up - additional control to orientate camera around lens axis

UFCEKT-20-33D Modelling and Animation Camera Types Representation in the Maya Environment Camera and Aim Camera, Aim and Up Camera

UFCEKT-20-33D Modelling and Animation Camera Movement ‘Subject’ is the point of interest for the selected camera Zoom - change the magnification of the subject by altering the focal length of the lens Dolly - change the camera’s perpendicular position relative to the subject Pan - follow the subject as it moves across the cameras field of view Track follow the subject from the side usually maintaining a speed equal to the subject’s speed Follow follow the subject through the scene from behind A typical scenario would apply variations and combinations of the above

UFCEKT-20-33D Modelling and Animation

UFCEKT-20-33D Modelling and Animation Using a ‘dummy object’ on a path to control a camera dummy object Dummy object follows path - camera child of dummy object and follows path - more subtle control of camera movement - less rigid connection

UFCEKT-20-33D Modelling and Animation The Hypergraph Window - a schematic representation of all objects in the scene

UFCEKT-20-33D Modelling and Animation Camera Attribute Editor

UFCEKT-20-33D Modelling and Animation Image Planes Cameras can have an image plane placed as a backdrop to provide a background to the camera's field of view or as an aid to modelling geometry against an orthographic image.

UFCEKT-20-33D Modelling and Animation B.Sc. (Hons) Multimedia ComputingMedia Technologies

UFCEKT-20-33D Modelling and Animation Clipping Planes Cameras have adjustable far and near clipping planes Any object beyond the far clipping pane is not visible Any object in front of the near clipping plane is not visible Clipping planes are often referred to as ‘yon’ and ‘hither’ where yon is far and hither is near

UFCEKT-20-33D Modelling and Animation Clipping Planes

UFCEKT-20-33D Modelling and Animation Maya Cameras Based on 35mm photography Lenses for wide angle, normal, telephoto Use terminology from the movie industry Zoom (change focal length of lens) Dolly - (move toward or away from subject Track - (side follow subject) No aberrations e.g lens flare Always in focus Animation as individual object and via path-based animation Use a dummy object as an intermediate connection between camera and path - improves animation of camera