Page 1 of 1
Environment maps?
Posted: Mon Aug 31, 2015 5:01 am
by contegufo
Hi
I downloaded some maps from the site
http://www.viz-people.com/portfolio/free-hdri-maps/.
They have the black bottom what is the reason?
Excuse my ignorance!
Re: Environment maps?
Posted: Mon Aug 31, 2015 5:19 am
by Oscar J
Probably because it's mainly for lighting. You're encouraged to either model the ground, or use a backplate.
Re: Environment maps?
Posted: Mon Aug 31, 2015 5:29 am
by contegufo
What is the difference with maps Dosch?
Thank
Re: Environment maps?
Posted: Mon Aug 31, 2015 5:35 am
by Oscar J
Dosch's HDRI's aren't (from my experience) as well captured, and thus have smaller dynamic range and thus give weaker shadows and highlights.
Re: Environment maps?
Posted: Mon Aug 31, 2015 6:06 am
by contegufo
You have to build something below the horizon.
Re: Environment maps?
Posted: Mon Aug 31, 2015 6:09 am
by Oscar J
That looks crap.
Are you sure that's a HDRI? Not a jpg preview?
Re: Environment maps?
Posted: Mon Aug 31, 2015 6:21 am
by contegufo
It was originally 20.000x10.000, was reduced to 1000 × 500 pixels to make a test.
yes it is a jpg.
Re: Environment maps?
Posted: Mon Aug 31, 2015 6:35 am
by Oscar J
That is not meant to use for lighting. You don't get any decent shadows, you need an image with .hdr or .exr format.
Re: Environment maps?
Posted: Mon Aug 31, 2015 7:00 am
by contegufo
Re: Environment maps?
Posted: Mon Aug 31, 2015 7:35 am
by Oscar J
Those look a bit odd. Basically the perhaps most used are then ones from Viz-people, and Peter Guthrie:
http://www.pg-skies.net