The animation below was done over the past weekend. It took about 48 hours to complete. It didn't need to take that long, but because of the long weekend, I wanted to let it run, so I upped the number of passes. The thing to remember when doing and animation in IRAY is to make sure you are not using the 'time' feature. You need to set the number of passes for your animation so that each frame is 'equal'. In other words, if you set up each from to take 2 minutes, a simple frame in the animation might achieve 45 passes, while a complicated frame with lots of reflections might only achieve 29 passes. This makes the frames look quite different and alters the grain pattern which can lead to a sort of flashing in the sequence.
Animation Tip
So, the thing to do is decide how long you want the rendering to take. Let's say you only have twelve hours to render 400 frames (overnight). That means you have 720 (12*60) minutes available. That means each frame can only take 1.8 minutes, or about 100 seconds. Go to the IRAY render settings and punch in a guess on the number of passes/iterations and see how long the scene takes. You might want to choose a complex frame to be on the safe side of the total render time.
Animation Tip
So, the thing to do is decide how long you want the rendering to take. Let's say you only have twelve hours to render 400 frames (overnight). That means you have 720 (12*60) minutes available. That means each frame can only take 1.8 minutes, or about 100 seconds. Go to the IRAY render settings and punch in a guess on the number of passes/iterations and see how long the scene takes. You might want to choose a complex frame to be on the safe side of the total render time.
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