Speed Up iRay Renders

Fauvist

I'm trying to use iRay.  The renders are EXTREMELY SLOW - like - 10 times slower than the old way.  Even with one light probe, and a render size of 700x700pixels it still takes forever - and there all these speckles - like the grain in old black and white photographs.  How do you get a SHARP render with iRay?

Without going into buying a new computer/graphics card/monitor etc. - are there a few simple tips I can follow to get things moving?

And - what is the light probe?  Is it an actual light fixure somewhere in the scene that can be moved and rotated?

 

Thanks!

Richard Haseltine

Without knowing your system specifications it's hard to say if that speed is typical or slow. Is the thing you are rendering in an enclose, or largely enclosed, space?

The HDRI lights the scene - its controls are under the Environment group in the Editor tab of Render Settings.

Canary3d

SickleYield has a bunch of excellent sanity-saving tutorials for Iray - here's a good one for starting to render: http://sickleyield.deviantart.com/journal/Mini-Tutorial-Iray-Progressive-Render-Settings-557481988

 

Rodrij

For fast renders use HDR lighting, avoid transluscency, reflections and cluttered scenes. Indoor scenes will take the longest.