On 25-4-2015 10:31, Stephen wrote:
> On 25/04/2015 08:33, Thomas de Groot wrote:
>> On 25-4-2015 9:13, Stephen wrote:
>
>>
>> Thanks indeed! I love that kind of historical information. Somehow, it
>> finds back its way into a scene or another.The painting of Rosa Bonheur
>> is typical. 19th century ray-tracing! ;-) It would be interesting to
>> work on that.
>>
>
> Did you forget to say things backward? ;-)
> I am not too sure if you mean Rosa Bonheur's paintings or the painting
> of her by Édouard Dubufe?

Typical! I mean /by/ Rosa Bonheur ;-)

>
> 19th century ray-tracing! - Camera obscura?

That and the genre painting, like Ilya Repin for instance.

>
>
>>>
>>> Art not science then?
>>
>> Certainly not ;-)
>>
>
> More like black magic to me. :-)

There is a distinct flavour of that too.

>
>
>>>
>> Yes, and with trace(), using a pigment_map with different contrasting
>> colours will show where the final hues will appear. They can then easily
>> be manipulated into the right combination.
>>
>
> I might dispute the "easily" bit. :-)
>
You are perfectly right of course. More often than not, I don't know 
what I am doing.

-- 
Thomas

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