On 10/19/2016 07:16 AM, Thomas de Groot wrote:
> On 18-10-2016 18:29, William F Pokorny wrote:
>> [snip]
>> There is a base image_map texture on a plane. Over the top of that
>> texture is another with 5 columns of 4 colors (0,0.5,1.0,2.0) where the
>> 5 columns have transmit values of: 0,0.5,1.0,1.5,2.0. One parallel light
>> source, camera orthographic, ambient 0, diffuse 1.0.
>>
>
> Out of curiosity: what is a transmit value >1.0?
>
People use >1 sometimes to amplify colors or increase contrast.

I think Norbert used this technique for one of his recent, 
http://www.tc-rtc.co.uk/, metal monster images.

It isn't the most stable technique as can be seen in the right part of 
the posted images. I'd say use values in the 0 to 1 range as a rule.

Aside: I have a question rattling around in my head as to why the higher 
values tend toward black.

Bill P.

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