Vray 1.47.01 is better with sketchup 7 or 8 or same

[andybot_cg]

Use EXR and you must open in Photoshop CS5 or later and must have ProEXR installed you will not see the channels. Its $99 and well worth it if you want to take full advantage of this workflow.
http://www.fnordware.com/ProEXR/

I'll have to look at it again, (Edit: thanks - works great!)

For a preview, you can always render a low resolution test before you run the full size render to a raw file.

[tashko.zashev]

In my tests with V-Ray build 14901, the render to raw .exr format works fine, all channels are stored.

[andybot_cg]

I dunno. Exr has never worked for me. I just get one file, no layers. vrimg works fine, but the converter needs to be updated to have the correct channel names.


Edit:
Thanks to valerostudio, he pointed out Photoshop by itself doesn't read multi-layer exr files. I tried pro exr and it's reading all the layers in the raw exr file. Now I see where the source of my misunderstanding.