[教程翻译]Using HDR Images in finalRender 在fR中使用高动态全景图

http://bbs.hxsd.com.cn/showthread.php?t=9824396

	tut-1-skymap.rar
	已经调整好的max9格式文件（贴图等在原文件中）tut-1-skymap.rar

Using HDR Images in finalRender 在fR中使用高动态全景图
http://www.zoobox.co.uk/tut-usinghdr.html

Instead of using the Environment Slot you can use the Skylight slot available in the fR render parameters.
除了从环境栏使用hdr，fR的天光skylight栏也可以使用。
Using the skylight you have more control over how much light is sent by adjusting the skylight multiplier. You may also have a different map visible as your background than is casting your light - useful when you need to use a screen mapped background.
天光栏也有许多设置，可以设置为普通平面背景贴图。

Follow the steps above except place the map in the skylight slot in the render dialogue instead of the environment slot.
把之前在环境栏的贴图转移到天光栏。

You must also uncheck ‘Consider Background’ or you will get overexposed images. 去掉 consider background的勾选，否则可能会曝光过度。

You can adjust the skylight multiplier (as well as the HDR exposure) to control the amount of light emitted.
可以调节天光的倍增值，就和调节hdr曝光度一样的作用，来控制光线亮度。
Pros: More control over amount of light. Can use a different map for background.
优势：更多图片格式和选项来控制光线
Cons: Difficult to rotate/position map correctly. Invisible to reflections/refractions.
劣势：调节图片方位困难，对反射折射不可见。