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Forum Archive › What is the meaning of "Size" for the Sun lamp? Since Sun lamp is a wall of light, shouldn't it always be of infinite size? › Reply To: What is the meaning of "Size" for the Sun lamp? Since Sun lamp is a wall of light, shouldn't it always be of infinite size?
Sun lamp size in nontechnical words is the size of the sun as seen from the camera. At size of zero the shadows cast are very sharp.
The tangent of the half-angle = size.
