POV-Ray : Newsgroups : povray.general : Moonlight : Re: Moonlight Server Time
16 Apr 2024 07:52:09 EDT (-0400)
  Re: Moonlight  
From: Cousin Ricky
Date: 21 Mar 2022 23:42:42
Message: <623945b2@news.povray.org>
On 2022-03-21 14:41 (-4), Cousin Ricky wrote:
> On 2022-03-21 10:58 (-4), Chris R wrote:
>> I am working on a scene that is lit by moonlight coming through a window with
>> partially open blinds.  I use LightSys, and have set up the light source as an
>> area light just outside of the window itself.
>> I was wondering if anyone had suggestions for good color/lumens combinations to
>> simulate moonlight.  I am currently using a made-up color of <0.45, 0.5, 0.75>
>> and an intensity of 1.0 with no fading, (so I guess I'm not really using
>> LightSys to great effect here).  Has anyone done any spectrum analysis for
>> moonlight to suggest better values?
> Lumens is not what you want for moonlight; this is a measure of the
> total amount of light emitted (or reflected, in this case).  Lux is the
> proper unit for a light source that is effectively at infinity.
> Wikipedia says 0.05 to 0.3 lux.  That's quite a range!
> To get a narrower precision, a preliminary calculation is:
> [snip]

I just noticed that nowhere in your OP did you mention that the Moon is
full.  Please keep in mind that my reply, as well as the Wikipedia
figures, are for a full Moon.

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