Environment maps?

contegufo · Post by **contegufo** » Mon Aug 31, 2015 5:01 am

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!

Post by **Oscar J** » Mon Aug 31, 2015 5:19 am

Probably because it's mainly for lighting. You're encouraged to either model the ground, or use a backplate.

contegufo · Post by **contegufo** » Mon Aug 31, 2015 5:29 am

What is the difference with maps Dosch?
Thank

Post by **Oscar J** » Mon Aug 31, 2015 5:35 am

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.

contegufo · Post by **contegufo** » Mon Aug 31, 2015 6:06 am

You have to build something below the horizon.

Post by **Oscar J** » Mon Aug 31, 2015 6:09 am

That looks crap.

Are you sure that's a HDRI? Not a jpg preview?

contegufo · Post by **contegufo** » Mon Aug 31, 2015 6:21 am

It was originally 20.000x10.000, was reduced to 1000 × 500 pixels to make a test.

yes it is a jpg.

Post by **Oscar J** » Mon Aug 31, 2015 6:35 am

That is not meant to use for lighting. You don't get any decent shadows, you need an image with .hdr or .exr format.

contegufo · Post by **contegufo** » Mon Aug 31, 2015 7:00 am

Free HDRI CD collection from EVERMOTION
36 Maps HDR.
http://www.evermotion.org/tutorials/sho ... evermotion

Post by **Oscar J** » Mon Aug 31, 2015 7:35 am

Those look a bit odd. Basically the perhaps most used are then ones from Viz-people, and Peter Guthrie:

http://www.pg-skies.net