My question is "Using several transparent objects makes them black?".

Yeah, it is in the FAQ but the solution is not enough for me.

The max_trace_level is truncated at 256.

With the max_trace_level=256, I could still see the black color rather than
the color that I want.

I thought that "no_reflection" could be a solution but it doesn't work
neither.

There should much more white points and red regions in the cube but I can't 
see them.

Thanks.

-- 
==========================================
 Yonsei University, Department of Astronomy
 Seoul, South Korea
 Graduate Student, Room #703
 Joo Heon Yoon in GEM
 jhy### [at] galaxyyonseiackr
==========================================

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in news:44859c02@news.povray.org yoon wrote:

> My question is "Using several transparent objects makes them black?".
> 
> Yeah, it is in the FAQ but the solution is not enough for me.
> 
> The max_trace_level is truncated at 256.

Yoon,

looking at you image it's very dark. I increased gamma a lot in an image 
editor and it looks a lot better see attachment.
Are you sure max_trace is the problem? Is the gamma setting on your system 
ok. Did you render with assumed_gamma=1?

Ingo

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ingo <ing### [at] tagpovrayorg> wrote:
> in news:44859c02@news.povray.org yoon wrote:
>
> > My question is "Using several transparent objects makes them black?".
> >
> > Yeah, it is in the FAQ but the solution is not enough for me.
> >
> > The max_trace_level is truncated at 256.
>
> Yoon,
>
> looking at you image it's very dark. I increased gamma a lot in an image
> editor and it looks a lot better see attachment.
> Are you sure max_trace is the problem? Is the gamma setting on your system
> ok. Did you render with assumed_gamma=1?
>

What I find odd is that I can relate directly to this problem.

I have the following in my global section :

global_settings {
assumed_gamma 1
max_trace_level 32
max_intersections 128
photons { count 200000 media 100 }

The resultant image at lower res ( 800x600 ) looks quite good.

At very large sizes it has many black holes in glass objects.  The black
holes are not one 1 pixel in size.  They appear to be 2x2 but I am not
sure.

In any case perhaps the fault is with the antialias method 2 ?

I am just guessing here of course.

Dennis

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