> On 28/08/12 02:37, Alain wrote:
>> A 6x6 area light? Why not a 9x9 or even 17x17 or 33x33 using
>> adaptive 0? In this case, adaptive 0 don't realy risk to cause any
>> visible artefacts, and willbe much faster while giving you smoother
>> penumbras.
>
>    I've used always "jitter adaptive 1" for years... wouldn't "adaptive
> 0" shot more rays, thus being slower?

adaptive 0 start with only 4 samples, taken at the corners, while 
adaptive 1 start with 9, in a 3x3 array, taken at the corners and at the 
mid point between them.
6x6 don't subdivide effeciently. 5x5, 9x9, 17x17, 33x33, 65x65,... all 
subdivide with the maximum effeciency.

>
>> For Michael, your organ probably have plastic keys. For most classic
>> pianos, the white keys are ivory and the black ones are maogany or
>> black dyed hard wood if it's a cheap one. Whites have SSLT, blacks
>> don't have any, or so little that it can be ignored.
>
>    I just tested, and SSLT with an almost black pigment doesn't get much
> noticeable, almost no difference at all. I guess the light would have to
> be very close to the object to have an appreciable effect.
>
> --
> Jaime
>

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