This way is convenient to make the irradiance map, but is not suitable for reflection. + Scale does not change again. If its load and reduce the environment map, there is the same as in octane. There are distortions of the environment map.

I do not understand why it is impossible to change the ...

roeland wrote: Roeland

Hi!
I understand how it works. I have an idea what can be done. But I do not know how to describe in words, and even through Google translator.
During this week, I will try to draw a sketch.

Вот панорама сделанная мной
https://www.360cities.net/image/interior-bar-russia-ekaterinburg-2009
Если её вставить как карту хдр в октан, то угол зрения камеры будет соответствовать углу зрения камеры внутри сферы.
Это все правильно.
Но почему нельзя его отрегулировать отдельно? Это всего лишь ...

Hi ura,
another idea is to use HDR Light studio, you should be able to create your own custom reflection HDR more easily and works pretty well with OctaneRender:
https://www.lightmap.co.uk/hdrlightstudio/
ciao beppe

Hi bepeg4d

This way is convenient to make the irradiance map, but is not ...

roeland wrote:There is no "scale" parameter. An environment map covers 360°, you can't change that scale in any way.

it can not be done?

Hi ura,
maybe you can setup your own environment set starting from prebuild scenes, and create your own HDR with Octane panoramic camera.
In this way you can correct the environment based on your needs. In theory, you should be able to create your own set that you can reuse in several scenes.
ciao ...

it would be logical to make the scale of the management of the environment map. Now she has some sort of a setup. When you make a map coverage of HDR Light Studio, the scale of inside and within the same octane. It seems that this is a common standard. But why not make this option for manual control ...

Hi ura,
the HDR image is static and is taken with wide angle lenses. If the place is small, you have less possibility to match a big object.
A car in a large and open space works better, but try to use your HDR with a smaller object like a pan or a teapot, surely it works much better and you have ...

Hi ura and Elvis,
please watch this old video by Rikk The Gaijin:
https://render.otoy.com/forum/viewtopic.php?f=40&t=48166&p=240248&hilit=hdr+car#p240164
ciao beppe
Thank you for the video. But it is not clear how it works.
When I just twist the scene. I get to achieve the appropriate scale, only ...

From Otoy side we could ask to make have a option to add a custom shape (mesh) at sunsky node for example cube, dome or other so if is possible use importance sampling on them.???

Necessary setting environment sphere size.

this can be done by hand. then cut and merge layers in Photoshop. But ...