Subtitles of the Movie

Another area where we can increase the realism in the render or art direct some of the look of it is with something called Optical Effects. The Optical Effects are used in a number of ways. We are going to take a look at one, which is the ability to add a little bit of glow to objects. So I will begin by selecting and rendering this little bee. This is based on our three point lighting scheme. And now I will open up the IPR Render. And once that is finished I'm going to select an area just to update this little section here. Okay, so we will watch that little area there and then since I have part of that de-selected, I can go into the Shader, in this case, Fung 2 and drag down to the section called Special Effects. Here you can see there is something already in the scene called Glow Intensity or in the attributes of the Shader and as I turn that up you can see a glow appearing around the brightest parts of the bee. So I'm going to drop that down a little bit. And I can stop the RPR render and we can do a complete, traditional render there. Okay, so this adds a little bit of a warm look to it to give it that glow. One of the things that sometimes is a little strange about CG is that you never see any light sources, so by default you don't have a rendered spotlight only the effects of that spotlight. So I've got a very bright rim on this character, which means that sometimes during camera movement, you probably expect to see a light source of some kind. So if you want to turn on the renderable light source, what you need to do is select the light, in this case I'm going to pick that spotlight back there. And again, I'm going to do an IPR render. And then in the attribute editor for the light there is a section for -let me grab a section to begin tuning, somewhere in there is where my light source is. Again, we will keep that open down here so that we can watch that little section and see the light show up in the Attribute Editor here for that spotlight. I can open up the Light Effects section and drag down. I see something in here called Light Glow and I'm going to turn, click on this Create Render node button and this automatically sticks a Light Glow optical effects node into the scene and so here it is, the optical effects node has a section for turning on and off lens flare. So we will start with that. There is a lens flare, shows up. And now that that is enabled, if I come down here to the Lens Flare attributes I can drag down here and start adjusting things like the intensity, the number of circles in the Lens Flare, minimum and maximum size, if it's a hexagonal flare. And these are all settings that are meant to mimic the optical aberrations in a lens array. So there are some cases where you will try to match this perfectly to something else if you are doing a live action plate where a real lens flare is being seen and then you are adding in a CG light and need to match the look on that lens. Otherwise you can play around with all these knobs until you get something you like. So here is the flare vertical as you drop this down and point it in the proper direction. Again, there is real optical effects in life that cause these lens flares to head from the light source out in a particular direction. So that is the lens flare, go ahead and turn that off. Just in the - right now we are using a Glow and the Glow is of type linear, so you can go in here and try on different types of Glow. Here is a ball glow. If I go down into Glow Attributes now, I can adjust things like color let's say this is a warmer light source. Except that now my edges have that sort of orangish look. I can adjust the intensity of the glow. Spread and so on. And so you can create all kinds of - there is a bit of noise on that, which gives you sort of an outer space or a fog or something like that. So you can kind of go crazy with it and you can see that by turning on this IPR render, you can get really quick feedback for all the changes that you make. Go up here and turn the Glow type to none and then turn on the Halo so you can see the intensity is really high on that. Open up Halo Attributes and here you have some adjustments you can make to that. So this will give you the simplest, I think, light source and sometimes you might need the lens flare in there. But just to make it look like something is going on in there without creating actual geometry, to look like a light bulb. And of course you can use the two of those in concert to create an even nicer effect. Go ahead and hit Stop on my RPR render, back out and do a full blown render and you can see the glow and the lens flare get added at the end of that. So that is one use for the - a couple uses actually - for the Optical Effects.