POV-Ray : Newsgroups : povray.advanced-users : Realistic Lunar Rendering Tool : Re: Realistic Lunar Rendering Tool Server Time
8 Aug 2022 20:46:41 EDT (-0400)
  Re: Realistic Lunar Rendering Tool  
From: JayTan
Date: 27 Jul 2022 02:55:00
Message: <web.62e0e045504dd6ddf40e72cfff26edec@news.povray.org>
"Mr" <m******r******at_hotmail_dot_fr> wrote:
> "JayTan" <nomail@nomail> wrote:
> > Hi:

> >
> > Jay
> > http://www.PHPScienceLabs.US
> Hi, I just looked at pictures, this is thrilling ! Have you tried lowering the
> brilliance finish parameter slightly below 1.0 so that it more closely matches
> the high (oren nayar type) sigma of lunar rocky surface? ambient should be 0 and
> it also looks to me like diffuse reflectivity could be very slightly lowered to
> keep corresponding contrast once brilliance is tweaked (specular seems spot-on
> though !)(if using latest POV, maybe even just using albedo keyword would be
> enough?).

Glad you're thrilled!   LOL

I was thrilled when I finally got the spherical isosurface to work!  Took weeks
of experimenting.  POV-Ray has a steep learning curve!

Actually, I just looked at lots of actual NASA pictures and adjusted the
settings by eye as close as I could to match the rendering to the shades of the
NASA reference pictures.

The LUNEX program has some ability to fine-tune the image brightness, contrast
ambience to allow for a little flexibility when needed.

I'm still a novice at using POV-Ray, so I'm still learning to use some of the
features you mentioned.  Hopefully, I'll get better.  I wasn't aware of the
'albedo' keyword, I'll have to check that out too.  Most of the keywords are
still mysterious to me.

I've also noticed that on different monitor displays, the colors and contrast
vary a great deal, so what looks perfect on one monitor may not look so perfect
on another right next to it.  It's very hard to make a rendering just perfect
when monitors vary so much in the way they display colors.

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