Arrow Group Industries LM86 Manual do Utilizador descarregar pdf (Página 21)

Maxwell Render 2.5 User Manual

Chapter 5. Cameras | 21

more pronounced the motion blur will be.

However, for animations – when replicating a lm camera – the shutter speed is

generally xed to a certain speed, usually 24 frames per second (1/24). Since lm

cameras cannot control the amount of motion blur by changing the shutter speed,

they instead have a rotating disc with an adjustable pie-shaped cut-out on it, which

controls how long each frame is exposed. The width of the cut-out is called Shutter

Angle, and is expressed in degrees. Fully open (180 degrees) will yield the maximum

amount of motion blur, while a very narrow setting (say, 15 degrees) will produce

very subtle motion blur. This feature automatically translates your usual ISO/ Shutter

speed settings in combination with the Shutter Angle, so your animation exposure will

match your still image exposure, while producing the proper amount of motion blur.

Maxwell Shutter (exposure) = FPS (frames per second) * 360 / Shutter Angle.

Shutter Angle = FPS * 360 / Maxwell Shutter (exposure).

% of motion blur = Shutter Angle * 100 / 360.

• Frame Rate (fps): Frames per second in the rendering camera.

5.06 Shift Lenses

• Offset (%): This parameter allows you to offset the lens position horizontally and

vertically. It can be useful to correct geometric perspective distortion.

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Arrow Group Industries LM86 Manual do Utilizador Página 21