WEBVTT 00:01.350 --> 00:08.880 Welcome to lighting with cycles in this video will show that lamps sort of work in blender. 00:08.880 --> 00:16.560 However it's better to create a light source as geometry and then apply the missing material to that 00:16.590 --> 00:18.000 object. 00:18.030 --> 00:20.980 So let's go explore that in blender. 00:22.280 --> 00:27.350 Okay welcome back into blender and the first thing I'm going to do is change my viewport shading to 00:27.350 --> 00:28.260 render aid. 00:28.310 --> 00:33.310 Now I often use the menu item down here so you guys can follow along. 00:33.330 --> 00:38.360 So I'm not pacing it too quickly but just to let you know you can also use the shortcut key whilst your 00:38.360 --> 00:42.320 cursor is in the 3D view that is always important. 00:42.320 --> 00:45.710 Shift in Z and that will flick in and out. 00:45.710 --> 00:49.070 Just a note at this point I'm only rendering to 10 samples. 00:49.070 --> 00:52.230 I don't need it super detailed at this point in time. 00:52.280 --> 00:55.150 I just need a rough idea of what's going on. 00:55.160 --> 00:57.470 It also won't tax your computer so much. 00:57.650 --> 01:03.830 If you keep the sample rate low so what we can do is if we hop over to the outliner I will just check 01:03.830 --> 01:05.720 that this is the only lampin Us seen. 01:05.720 --> 01:12.300 I know it is of course but if I click on the little icon it will disappear from the viewport shading 01:12.860 --> 01:14.130 and just a side note here. 01:14.150 --> 01:19.480 We go to render and render image or hit the F 12 key we can see it here. 01:19.610 --> 01:23.120 If you go ahead and click for camera I can. 01:23.120 --> 01:26.200 It turns it off in this round up. 01:26.660 --> 01:32.910 So the eye is for the 3D view and the camera is for your final render. 01:32.990 --> 01:36.410 So let's go ahead and have a look at the other lamp properties themselves. 01:36.410 --> 01:43.280 I'm just going to move the outline a new notice whenever you resize a window the view port starts recalculating 01:43.280 --> 01:50.470 So if you want to keep your computer from ramping up in volume as it gets really hot and starts thinking. 01:50.540 --> 01:55.020 Try not to recycle windows or certainly not the viewport one that often. 01:55.160 --> 01:59.780 Especially if it's actually building up so if we were wanting to have a little look at what it looked 01:59.780 --> 02:04.370 like with 100 samples and I got a move that it will reset back to one which should be really really 02:04.400 --> 02:05.140 annoying. 02:05.420 --> 02:08.120 Okay so I'm going to click on the lamp in the outline. 02:08.120 --> 02:10.220 I can also select in the 3D view. 02:10.370 --> 02:17.750 I'm going to go to the lamp properties on the properties window and we can switch here between points. 02:17.750 --> 02:23.720 Sun spot Hemmy area etc. So there's lots of things to choose from there. 02:23.810 --> 02:30.770 Now we can't change the intensity like we can in blender render as easily unless we click on this button 02:30.770 --> 02:32.690 that says use nodes. 02:32.930 --> 02:38.420 When we click on that we can see that the surface changes to in mission and then we can change the colour 02:38.450 --> 02:39.910 and the strength. 02:39.920 --> 02:47.300 The other thing we can do is actually make any missive object and that can be quite powerful as well. 02:47.300 --> 02:55.570 So you've got us both six options in total you can pick any one of these or create the missive object 02:55.610 --> 02:58.120 and that's what we're going to do right now. 02:59.720 --> 03:04.820 I'm going to leave the lamp on at the moment so we can just have a bit of light whilst we're making 03:04.880 --> 03:10.590 our lightsource So let's whiz back out and just have a quick look at our scene. 03:11.150 --> 03:11.590 Right. 03:11.720 --> 03:20.210 I'm going to create a little it's like a light bulb I suppose so I'm going to create a way in object 03:20.210 --> 03:20.440 mode. 03:20.440 --> 03:22.920 Brilliant because it's going to be a new object. 03:22.940 --> 03:26.930 It doesn't matter I'm going to create a UV sphere and it doesn't need to be complicated at all. 03:26.930 --> 03:32.540 In fact it can be the lowest possible thing three in three size radius of one where we can adjust that 03:32.540 --> 03:37.640 in a bit and see what its effect is and just kind of lift it away from our cone just leave it straight 03:37.640 --> 03:38.480 above it. 03:38.660 --> 03:46.190 And I'm going to go over to the middle tier reels tab and create a new material and call it lights. 03:48.370 --> 03:57.280 Once we've got the light material there we need to change the surface here to an end missive or emission. 03:57.280 --> 03:58.880 Here we go in mission. 03:59.050 --> 04:02.090 So it's just about a third of the way down. 04:02.350 --> 04:08.330 Now once we click emission it's going to emit this colour at this strength. 04:08.500 --> 04:11.430 So it's going to emit a white light at strength one. 04:11.830 --> 04:14.810 So let's hop straight back over into rendered mode. 04:16.280 --> 04:24.980 And we can see we've got our spot light so let's turn our lamp off and let's rename our spear spear 04:25.250 --> 04:31.100 sphere light source for the moment and just turn off the lamp. 04:31.310 --> 04:36.680 So at the moment we've got as we can see here we've got them sticking in renderman just moving around. 04:36.680 --> 04:39.700 We've got this kind of very dim light here. 04:39.740 --> 04:40.930 The strength is one. 04:40.940 --> 04:44.990 So we term up to 10 we can see it starting to light our scene up. 04:44.990 --> 04:47.250 We turn it up to 100. 04:47.390 --> 04:48.310 That's quite bright. 04:48.320 --> 04:51.980 Now it's taken a while to render off but that's like having a light above. 04:52.040 --> 04:58.250 Now we can have a sphere there we can have a plane so you can have like a window basically emitting 04:58.250 --> 04:59.730 light into the scene. 04:59.810 --> 05:05.700 Now I'm going to try and move this light source in the y direction. 05:05.810 --> 05:08.230 In our scene I just move it away so you can see it. 05:08.240 --> 05:13.660 Updates are seen accordingly and we've got a harsh line there. 05:13.660 --> 05:19.910 So this is important I quite like the lighting that's coming in there as a bit of ambient lighting might 05:19.910 --> 05:25.040 tone it down a bit once we've actually got the lamp cam we're just going through the principles here 05:25.040 --> 05:26.090 setting up our scene. 05:26.090 --> 05:32.750 In fact we could have two of those lights if we wanted to let's just see what effect if we select the 05:32.750 --> 05:35.200 light source it's there and that's absolutely fine. 05:35.210 --> 05:38.690 We know it's selected in the outline and just scale it. 05:38.690 --> 05:41.710 So if we move in that gets dimmer. 05:43.140 --> 05:46.500 If we scale it up it gets brighter. 05:48.570 --> 05:53.160 And it also changes the type of shadow that appears behind our. 05:56.850 --> 06:02.670 Our cone as we can see that this is a very big it might get a bit too bright for our scene but we can 06:02.670 --> 06:05.680 see that it's yes that is far too bright. 06:06.090 --> 06:10.960 We can see that it's starting this shadow behind is starting to be a bit more blurry. 06:11.100 --> 06:16.580 If we make that really really small as if it was a little speck on we're going to have to turn the strength 06:16.580 --> 06:20.140 off at this point to even make an effect on our scene. 06:20.160 --> 06:28.690 Wow this is where at ten thousand we can see that the shadow behind here is much more sharper and defined. 06:28.770 --> 06:35.400 So depending on how large your source is just like in real life if you've got a large light in front 06:35.400 --> 06:43.620 of you it's going to make the shadows behind you much much softer than if you had a tiny light in front 06:43.620 --> 06:44.190 of you. 06:44.190 --> 06:45.930 That would create a much harsher light. 06:45.940 --> 06:49.170 But I quite like that that's worked out really well. 06:49.200 --> 06:50.880 So what else can we do. 06:50.880 --> 06:56.350 Well we can have different shapes of light etc. and we can obviously grab our lightsource. 06:56.490 --> 07:02.820 And I want to keep the lamps the same so I can link duplicate here and just move that across to over 07:02.810 --> 07:03.420 here. 07:03.420 --> 07:08.880 So now we've got two lights and we can light up our scene as if it was in an office or something along 07:08.880 --> 07:09.840 those lines. 07:11.490 --> 07:13.290 Okay guys it's Challenge time. 07:13.290 --> 07:19.950 I'd like you to set up your scene lighting set up an object or two as a light source in our scene. 07:20.130 --> 07:25.770 Now do remember we can and are likely to change this lighting later on. 07:25.770 --> 07:31.830 Once the scene gets more and more developed it's just a ploy almost a place holder lighting at the moment. 07:31.830 --> 07:33.830 Just so you can play with the lighting. 07:33.870 --> 07:39.090 Try different sizes different shapes you don't have to go for a sphere you go for a plane have that 07:39.090 --> 07:46.520 plane emit light and obviously as you rotate the plane itself it's like having a window or a sky lights 07:46.530 --> 07:48.490 depending on how you set it up. 07:48.870 --> 07:51.470 So balls of the air now give that a go. 07:54.170 --> 07:54.950 Okay guys. 07:55.070 --> 07:56.270 Welcome back. 07:56.270 --> 08:01.090 Let's hop back over into blender and have some play about with our lighting. 08:05.190 --> 08:07.040 Okay so back over in blender. 08:07.150 --> 08:14.670 I've I don't really like the idea of these two spotlights thinking about sets it's not spotlights but 08:15.530 --> 08:16.720 spotlights. 08:17.070 --> 08:21.940 I don't know how else to put that these two just circles in the sky. 08:22.050 --> 08:27.070 So I'm just going to delete both of those from our scene and it will go pitch black. 08:27.240 --> 08:32.760 But I'm not going to delete our lamp yet because it can always be a subtle addition to our lighting 08:33.130 --> 08:33.850 right. 08:33.930 --> 08:38.470 So in object mode I'm going to actually recenter. 08:41.070 --> 08:51.510 The 3-d cursor and I am going to hold down the right keys so I can move about properly and add a mesh 08:51.510 --> 08:52.540 that's going to be a plane. 08:52.530 --> 08:56.240 I actually quite fancy a window open. 08:56.580 --> 09:00.400 So let's just make that a little bit larger. 09:00.420 --> 09:07.690 Move that up move it back and then I'm going to rotate it around its x axis. 09:07.830 --> 09:12.870 So it's a bit like that so you can imagine that was be a very large window but you can imagine a window 09:12.870 --> 09:13.770 just there. 09:13.770 --> 09:17.680 We can always scale it in again depending on the effect it has on our model. 09:18.060 --> 09:20.730 So now we've got the plane selected. 09:20.730 --> 09:24.770 We just need to assign that material now being assigned a light material. 09:24.780 --> 09:30.480 And I haven't exited my animated lamp blend at the moment. 09:30.480 --> 09:36.890 I still have the light material available now if I was to call it that zero would disappear. 09:36.960 --> 09:42.210 Anything that's got zero against it will disappear upon quick saving quittin and coming back we'll get 09:42.660 --> 09:44.130 some more details in that later. 09:44.130 --> 09:51.530 But we can click on light and it will assign the same thing we were working on to this plane here. 09:51.720 --> 09:55.860 Now Im going to switch in surrendered mode and Ive got a feeling that is going to be far too bright 09:55.860 --> 09:58.270 for our scene and I'm right. 09:58.290 --> 10:00.910 That's because the emission level is 10000. 10:01.020 --> 10:04.100 Let's turn that down to 100 and see what happens then. 10:04.140 --> 10:08.520 All that's still too bright so we've got a couple of options I'm going to just hit one and see what 10:08.520 --> 10:10.820 how that comes out that's a bit better. 10:10.830 --> 10:12.500 Probably five. 10:13.800 --> 10:16.450 Let's have a look at our cone. 10:17.180 --> 10:17.800 Yeah. 10:18.080 --> 10:18.860 I like that. 10:18.860 --> 10:24.550 The only thing I don't like is the cone itself doesn't have smooth shading on. 10:24.680 --> 10:28.820 So with the cone selected unst going to hit smooth shading in the tool shelf. 10:29.870 --> 10:31.340 Have a quick look at that. 10:31.550 --> 10:35.470 And there's some funny stuff going around the base here. 10:35.560 --> 10:41.750 The reason for that is it's trying to smooth shade around the base as if it didn't have a sharp edge. 10:41.750 --> 10:47.870 Now I know this is a place holder but I'm just going to go in and make it look a tiny bit better in 10:47.870 --> 10:48.440 solid man. 10:48.440 --> 10:50.430 I'm going to add an edge loop. 10:51.860 --> 10:56.120 And with that edge selector I can't have an edge loop because it doesn't allow it. 10:56.120 --> 11:00.600 When you've got a cone so Im going to just extrude by nothing. 11:00.610 --> 11:04.110 So I'm going to pop in to rend my road now that's selected. 11:04.160 --> 11:11.630 You can see it's dark artificially around the base and if I hear extrude by nothing and hit enter. 11:11.630 --> 11:16.510 That should create a much better roundness around there and it has done so. 11:16.610 --> 11:22.190 There is some geometry on top of one another but that's okay because that has defined that one edge 11:22.310 --> 11:23.730 as a sharp point. 11:23.750 --> 11:28.580 There are there are a couple of other ways of doing that but for this purpose of this exercise right 11:28.580 --> 11:32.710 here that's absolutely fine and looks much better because of it. 11:32.990 --> 11:38.690 So I just need to turn off the other lamp of course that render the scene so we've only got the one 11:38.780 --> 11:41.030 light source going on. 11:41.030 --> 11:41.480 Excellent. 11:41.480 --> 11:46.660 Let's just go to render and render our image and see how that comes out. 11:46.670 --> 11:52.570 It's lucky that the camera faces at x y equals zero. 11:53.030 --> 11:56.450 And I'm still not happy with this sharp crease here. 11:56.450 --> 12:02.600 I've set it up so you've got a smooth curve going around there and it still got a crease here so let's 12:02.600 --> 12:06.110 see if we can do something about that as well. 12:06.110 --> 12:08.990 So let's just go out of here. 12:09.160 --> 12:12.650 We need to go down here to 3-d view again. 12:12.830 --> 12:16.630 Right so let's skip over to solid. 12:17.840 --> 12:25.670 Make sure we're in object mode and then select our backdrop and make sure it is smooth shaded believe 12:25.670 --> 12:26.900 it is. 12:28.590 --> 12:29.370 Up into rendering. 12:29.370 --> 12:31.340 Still got that sharp edge there. 12:31.570 --> 12:39.400 So in this case I'm going to bevel this edge here so let's hop into edit mode and this will just help 12:39.490 --> 12:40.750 smooth it out. 12:40.750 --> 12:42.200 Just a little bit more. 12:42.220 --> 12:45.020 Not going to add too much geometry into it. 12:46.330 --> 12:50.150 I think we've got doubles on top of one another here. 12:50.170 --> 12:56.110 Similar thing to the bottom around here what we did want because I've managed to create this with doubles 12:56.110 --> 12:56.980 around it. 12:57.010 --> 13:02.880 We've actually got ourselves a hard line then that's what it's rendering like that so in edit mode off 13:02.890 --> 13:08.260 selected that in time hollander's going to go remove doubles and we've removed two vertices. 13:08.260 --> 13:14.420 And if we hop back into rended mode I bet that's lovely and smooth now is perfect. 13:14.470 --> 13:15.850 It's exactly what I wanted. 13:15.850 --> 13:22.270 So occasionally if you've got doubles they can call sharp edges and they did in this case. 13:22.270 --> 13:23.170 Brilliant. 13:23.530 --> 13:24.220 Okay. 13:24.340 --> 13:25.630 How did you guys get on. 13:25.630 --> 13:30.490 I'd love to see the lighting you came up with in your scene so please share that in discussions and 13:30.490 --> 13:32.780 I will see you in the next lecture.