Hi, looking at the portal info it gives the example of a physical sky and panoramic backgrounds. Doesn't the portal also concentrate GI rays from internal objects such as a glass lightbulb so when using GI you should look at setting up your objects accordingly as a portal and you can in turn reduce the number of bounces as the portal will increase the quality of the render which means the greater the number of portals the greater the increase in quality and also the quicker the render? (waiting to hear that there is a downside here somewhere) thanks