yoon wrote:

> At first, make a white ball and then make a red box, which is bigger than
> the ball, in front of the ball.
> 
> If I use the command "filter" or "transmit", I could see the ball through
> the box.
> 
> But the color of ball(white) seem to be redder and dimmer than its
> original because the light traverse through the red box.
> 
> If I put more red boxes in front of the ball, I will not be able to see
> the ball because many boxes screen the light emitted from the white ball.
> 
> How can I see the white ball even if there are many boxes between the ball
> and the camera?

Are you running into a problem with max_trace_level?  How many boxes are
there?

-- 
Mark

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