On 2/22/2018 11:56 PM, Mike Horvath wrote:
> Are there any old scenes or renders that I can use to compare behavior 
> in old and current versions of POV-Ray? By default, using 1 lumens the 
> daylight scenes seem dim and washed out. I have to pump up the lumens to 
> 2 or 3 to get nice daylight colors and brightness. Thanks.
> 
> 
> Mike

This is a render with 2 lumens:

https://i.imgur.com/wHmo76S.jpg

This is a render with 3 lumens:

https://i.imgur.com/Q50eHAz.jpg

Here is the code I am using.



// -------------------------------------------------------------
// Nonstandard includes

#include "CIE.inc"					// 
http://www.ignorancia.org/en/index.php?page=Lightsys
#include "lightsys.inc"				// 
http://www.ignorancia.org/en/index.php?page=Lightsys
#include "lightsys_constants.inc"	// 
http://www.ignorancia.org/en/index.php?page=Lightsys


// -------------------------------------------------------------
// Lights
// Sun is not at realistic distance and is not an area light like it 
should be.
// Could use "sunpos.inc" here too to determine a correct position and 
angle.

#declare light_source_lumens	= 3;				// float
#declare light_source_temp		= Daylight(6100);	// float
#declare light_source_color		= 
Light_Color(light_source_temp,light_source_lumens);	// float
#declare light_source_location	= vrotate(<0,0,-1000000000>, 
<-060,-060,+000>);			// needs to be far enough above the clouds to cast 
shadows

light_source
{
	light_source_location
	srgb light_source_color
	parallel
	point_at <0,0,0>
}

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