WEBVTT 00:04.490 --> 00:06.590 Hello everybody and welcome back in this lecture. 00:06.590 --> 00:12.170 We are going to talk about depth of field specifically in blender render its set up different in cycles 00:12.170 --> 00:14.390 and we'll cover that later on in the course. 00:14.390 --> 00:15.800 So what is depth of field. 00:15.800 --> 00:21.320 Well as you can see in this picture that I've got in blender here the black piece is in the background 00:21.380 --> 00:22.010 are blurred. 00:22.010 --> 00:28.130 In fact some of these white pieces are also blurred with the only object being in focus our night. 00:28.130 --> 00:33.260 So what this allows us to do is separate parts of our scene by blurring some of them out. 00:33.260 --> 00:36.410 And this is a technique that's used in the cinema with videos. 00:36.410 --> 00:40.450 It's used in photography especially in portrait photos. 00:40.460 --> 00:43.930 It's use all the time and it really does add to your scene. 00:43.940 --> 00:47.930 Now of course we're at the stage now where we're starting to produce some really nice models and we 00:47.930 --> 00:52.120 want to show them off and using depth of field is going to help with that. 00:52.130 --> 00:55.490 There are a couple of things and new things that we're going to have to learn at this point. 00:55.590 --> 00:57.360 So let's go ahead and do that now. 00:57.530 --> 01:01.850 Well the first thing we need to do is I'm going to hop back over into my 3D view and when we get my 01:01.850 --> 01:07.670 views set up in order to do this we're going to have a new view called the node editor. 01:07.850 --> 01:11.140 And I also want a UV image editor open as well. 01:11.450 --> 01:13.610 Now I'm not sure how I'm going to go about splitting this. 01:13.610 --> 01:19.460 I'm going to do a vertical split here and a horizontal split here I think that's what I'm going to go 01:19.460 --> 01:20.210 for. 01:20.270 --> 01:23.960 So I need to go ahead and make one of these a node and a term probably going to use the bottom ones 01:23.960 --> 01:29.460 or change that to an editor type node editor so that's switched across there now. 01:29.480 --> 01:34.350 It might not go to this view straightaway if you've been playing about in blender. 01:34.490 --> 01:40.240 But you should have your render layers over on the left and a compositor node on the right. 01:40.340 --> 01:45.350 And that's basically saying we're going to render an image and then something is going to happen to 01:45.350 --> 01:48.870 it and the composer is what you see at the very end of it. 01:48.890 --> 01:54.350 Now if you dont see that for whatever reason on the head a bar make sure out of these three buttons 01:54.350 --> 01:57.840 the middle one is selected and use nodes has a tic on it. 01:58.080 --> 01:58.490 Okay. 01:58.610 --> 02:05.510 So with that out of the way the next one of these windows is going to have to be a lets say a V image 02:05.510 --> 02:11.770 editor so when we do our rendering when we go ahead and press F 12 it goes ahead and renders for us. 02:12.120 --> 02:14.300 Now in this case its gone ahead and done that. 02:14.300 --> 02:15.830 Why has it done that. 02:15.920 --> 02:20.120 Well its simply done that because this was already selected on an image we might not have wanted it 02:20.120 --> 02:21.150 to overwrite that. 02:21.260 --> 02:24.530 So we can go ahead and change that to render result. 02:24.620 --> 02:29.990 And at this point I can change this back to a node down there and when we press F 12 it'll then render 02:29.990 --> 02:31.610 in the appropriate window. 02:31.760 --> 02:34.880 So we go we've got it rendering out there and we are in blender render. 02:34.880 --> 02:38.540 That is something important more about to set up will only work in blender render. 02:38.540 --> 02:40.110 As I said we'll cover cycles later on. 02:40.220 --> 02:44.230 I'm going to get rid of my tool shelf and Properties window there so we can focus on. 02:44.240 --> 02:47.680 Now you may be viewing your 3D view ever so slightly differently. 02:47.690 --> 02:53.810 That's not a problem if you are pressed numb pads zero in order to bring the camera view background 02:53.840 --> 02:58.430 or you can go to a view camera and we can see there no pads zero. 02:58.760 --> 03:01.220 Okay so now we've got everything all lined up. 03:01.220 --> 03:02.030 What do we need. 03:02.030 --> 03:06.140 Well we need to do a couple of things we need to make sure the camera is an appropriate place to get 03:06.140 --> 03:07.140 a good shot. 03:07.160 --> 03:13.130 So I'm in 3D view I'm going to press shift an F and that will enable me to go into first person mode 03:13.160 --> 03:15.830 and I can probably just lower this down a little. 03:15.830 --> 03:22.280 So we've got objects in the foreground and the background just like that I'm happy with that view just 03:22.310 --> 03:24.650 there from the camera's perspective. 03:24.770 --> 03:29.720 Now that I've gone to heaven done that it's all a matter of picking what we want to focus on and setting 03:29.720 --> 03:31.830 something up down at the bottom here. 03:32.000 --> 03:37.640 We'll go ahead and set up the nodes we need now we only need one additional node in this node editor 03:37.640 --> 03:38.050 here. 03:38.150 --> 03:39.280 So we go to add. 03:40.120 --> 03:45.050 And it's under a filter and it's called defocus. 03:45.360 --> 03:48.940 If we go ahead and click on that so you'll see that this new node appears and it floats. 03:49.050 --> 03:51.170 And then we move over the top of this orange line. 03:51.180 --> 03:54.780 What it will do is it will place it appropriately in there. 03:54.780 --> 03:57.600 Let's go ahead and press F 12 and see if anything's changed. 03:57.600 --> 04:04.100 What we'll find is that the rendered image renders out and then something will happen with the defocus. 04:04.170 --> 04:06.270 But we've not set anything up yet. 04:06.450 --> 04:12.230 Now one of the things that you'll notice over render images is that we have an image and our far and 04:12.230 --> 04:13.310 a depth output. 04:13.320 --> 04:16.670 Notice that the image is a yellow colour. 04:16.710 --> 04:22.010 The little dot there that means three values are coming out colour values are grb red green and blue 04:22.020 --> 04:29.170 values are coming out of that Alpher and depth or single values rather than three individual values. 04:29.190 --> 04:33.610 So they are grey and that's typical of all of the node editor. 04:33.650 --> 04:39.660 Now we want to focus on this depth output Now previous versions of blender previous to two point seven 04:39.660 --> 04:46.050 nine would have called this a Z depth rather then or just Z rather than depth. 04:46.050 --> 04:51.570 So we're going to need that and we need to plug that into the Z inputs on the defocus So let's link 04:51.570 --> 04:58.230 those two together you click on that grey node and we plug it into z and we can see something just happened 04:58.230 --> 04:59.470 at the very top there. 04:59.490 --> 05:01.390 I don't think it's done much or has it. 05:01.410 --> 05:04.250 Yes we're starting to get some blurring going on. 05:04.350 --> 05:08.520 And you can start playing with some of these features here but we can see at the moment it seems to 05:08.520 --> 05:10.590 be doing some arbitrary blurring. 05:10.800 --> 05:15.610 There's nothing controlling how this is it and how it's actually blurring. 05:15.630 --> 05:19.560 So the next scene we need to do is in the camera properties and making sure the outline and you have 05:19.560 --> 05:23.140 your camera selected Go to your camera properties. 05:23.310 --> 05:26.340 And if we scroll down somewhere in here here we go. 05:26.340 --> 05:27.250 Depth of field. 05:27.360 --> 05:32.640 I'm going to use these little eight dots on the top right of this and move it up a little so that's 05:32.640 --> 05:35.250 right under the camera lens settings. 05:36.250 --> 05:41.890 Now you can change the focal length to make it a wide angle shot or or really focussed in shot if you 05:41.890 --> 05:43.540 want to I'm going to play with that at the moment. 05:43.570 --> 05:47.700 Why want to change and the only thing we're focussing on here is the focus tab. 05:47.710 --> 05:49.220 We've got a little pet there. 05:49.240 --> 05:54.540 We go ahead and click on that and then we can select different objects that we want to focus on. 05:54.570 --> 05:57.580 So we selected this white porn at the very front. 05:57.670 --> 06:01.440 We can see that focus field now has white pawns in 0 6. 06:01.510 --> 06:05.360 If we didn't want that say Oh I've missed clicked I actually wanted that night. 06:05.380 --> 06:08.170 We can go ahead and click for cross get rid of that. 06:08.260 --> 06:11.340 Use the Pipettes again and select the Knights. 06:11.350 --> 06:17.110 Now you can use a drop down here and type things in if you wanted to so we knew we were looking for 06:17.110 --> 06:20.700 a night I can start typing in night and select from one of these nights. 06:20.700 --> 06:24.620 Now I will admit at this point my naming hasn't been very very good here. 06:24.640 --> 06:30.490 I don't have a clue which night is which at this point so I am going to use the pipette in order to 06:30.490 --> 06:32.310 pick the appropriate night. 06:32.460 --> 06:34.280 It just happens to be cold night. 06:34.500 --> 06:37.490 Okay so now we've selected that let's see what happens now. 06:37.510 --> 06:39.110 Let's go ahead press 12. 06:39.130 --> 06:41.170 You'll notice it renders out which is good. 06:41.380 --> 06:43.560 And then there's a second pass. 06:43.690 --> 06:47.530 And yes the background here is definitely getting blurry. 06:47.530 --> 06:52.850 So let's have a look in more detail at this node editor and more appropriately. 06:52.900 --> 06:54.530 The defocus. 06:54.820 --> 06:56.250 So we got a Boca type. 06:56.260 --> 06:59.890 Now this is the type of blurring that is going to happen. 07:00.100 --> 07:04.990 Now if you want it to look attractive and this is a really subjective thing you can play this to your 07:04.990 --> 07:10.650 heart's content but if you wanted to look attractive usually hexagonal works really well. 07:10.690 --> 07:15.790 Again you can play to your heart's content and as you see if I switch that around there is doing some 07:15.790 --> 07:19.480 more compositing it's building up the image for us. 07:19.660 --> 07:24.250 Now the other thing that we're not using at the moment is we're not really using this depth coming out 07:24.580 --> 07:27.220 we've told it what we want it to focus on the night. 07:27.340 --> 07:33.400 So we now need this depth information to be controlled and we can see here there's a use Z buffer and 07:33.400 --> 07:35.600 I'm going to put a tick in that box. 07:35.800 --> 07:41.060 And what that should now allow us to do is control the focus around our night. 07:41.080 --> 07:42.550 Our focus points. 07:42.610 --> 07:49.540 So we have a look back at the node editor and have a look at the f-stop value the lower this is the 07:49.540 --> 07:54.930 more blurring your image will be separated from the thing youre focussed on. 07:54.940 --> 07:59.980 Now you may find even even if you lower it down to less Let's lower it down to two and see what happens 07:59.980 --> 08:01.220 to our image. 08:02.260 --> 08:07.720 Everything that's gone blurry you may say But no there is a little sliver in there somewhere of complete 08:07.750 --> 08:08.470 InFocus. 08:08.560 --> 08:11.130 This is a word in focus. 08:11.180 --> 08:16.890 But anyway there's part of us in focus even though it looks kind of blurry and we can play with these. 08:16.890 --> 08:19.280 We can perhaps up this to maybe 20. 08:19.300 --> 08:25.510 There we go to get a blurred background and a sharper foreground here so that's starting to look really 08:25.510 --> 08:26.020 nice. 08:26.060 --> 08:28.480 We can play with these other selections as well. 08:28.480 --> 08:35.080 One of the ones I often play with is the threshold as well that keeps more of the objects in focus before 08:35.080 --> 08:40.580 it starts bleeding out so maybe a value of 5 in there to see what's going on. 08:40.820 --> 08:45.460 Now of course once you've gone ahead and done that we can blow this up just a little bit more to see 08:45.460 --> 08:47.710 what's going on. 08:47.710 --> 08:49.890 We can see that we've got this in focus. 08:49.930 --> 08:52.600 The background is out of focus starters look pretty nice. 08:52.600 --> 08:58.090 We can lower this back down it is all now about tweaking which of course now means it's time for your 08:58.090 --> 08:58.950 challenge. 09:00.010 --> 09:00.940 And your challenge. 09:00.940 --> 09:06.820 Well I'd like you know that we finished all of the modelling to rescale your model to a realistic scale 09:06.820 --> 09:11.310 so I think at the moment we've got things that are about four meters across and eight metres high is 09:11.370 --> 09:16.000 time to take that down to a realistic scale and the reason why I'm telling you that is because your 09:16.000 --> 09:22.660 depth of field calculations or so work on realistic scales properly at the moment if we've got things 09:22.660 --> 09:27.910 that are as tall as buildings eight meters tall that's going to change the depth of field that you're 09:27.910 --> 09:28.750 going to be working with. 09:28.750 --> 09:34.660 So it's often better to have your role models at a realistic scale for this process because then things 09:34.660 --> 09:39.610 are more in line with what you would get in reality if you're used to using photography and setting 09:39.610 --> 09:43.090 up your f-stop numbers on your cameras et cetera. 09:43.090 --> 09:48.760 But anyway what we want here is to Freescale the model to a realistic scale then set up some lovely 09:48.760 --> 09:53.200 depth of field shots and finally render it and share with us. 09:53.200 --> 09:58.000 I can't wait to see what you guys get up to when you start adding debt for phil. they already look amazing. 09:58.000 --> 10:00.200 I'm looking forward to seeing those ones as well. 10:00.250 --> 10:02.920 So go ahead pause a video and give that a go. 10:04.570 --> 10:05.810 OK everybody welcome back. 10:05.830 --> 10:10.730 Let's go ahead and rescale my model and then set up a depth of field shots. 10:10.840 --> 10:12.470 See over in blender. 10:12.940 --> 10:13.420 Okay. 10:13.420 --> 10:17.890 So back over in blender and we've got a bit of a mess of windows here. 10:17.950 --> 10:21.520 So the first thing I'm going to do is I'm going to select everything in my scene and hopefully it will 10:21.520 --> 10:23.200 just move everything at the same time. 10:23.380 --> 10:27.460 And we've got a height of eight meters here and really. 10:28.150 --> 10:35.500 What we looking at here in fact here let's select an object who got the king here it's 4.5 meters tall. 10:35.570 --> 10:40.300 And if we were to scale it appropriately so that needs to be scaled down by a factor of 100 some would 10:40.310 --> 10:44.120 select everything and with everything selected I'm going to scale. 10:45.040 --> 10:53.640 And then by a point 0 0 1 okay that's scaling around an arbitrary point. 10:53.650 --> 10:57.680 I don't want it doing nani's come out of this 3D view and just make sure it. 10:57.700 --> 11:00.450 Oh we've already lost the sun lamps over there. 11:00.470 --> 11:00.700 Okay. 11:00.710 --> 11:04.330 So we're going to have to do a bit of moving as well by the looks of things because with everything 11:04.330 --> 11:10.030 in the scene especially these lamps completely in the wrong place has the you know what if I move those 11:10.040 --> 11:17.200 hajee and not on the z and just place approximately over our scene we shouldn't have too many issues 11:17.200 --> 11:19.290 from then onwards. 11:19.330 --> 11:24.250 One of the issues at the moment of course is that it is all the way over there so one with scaling around 11:24.250 --> 11:26.710 everything it's just doing a crazy scale. 11:26.710 --> 11:32.230 So now everything's relatively close together to scale by point zero 0 or 1. 11:32.230 --> 11:33.410 I think it is. 11:34.620 --> 11:36.620 Everything would have gotten a lot smaller. 11:36.780 --> 11:39.410 Let's focus in on that so view. 11:39.570 --> 11:40.810 You selected. 11:41.550 --> 11:43.370 Or the number pad period key. 11:43.410 --> 11:44.010 And there we go. 11:44.010 --> 11:46.860 There is everything and we've now got the clipping issues. 11:46.860 --> 11:52.800 This is one of the reasons why we set it top initially and no no I've gone too far off of made it a 11:52.800 --> 11:54.130 factor of a thousand. 11:54.150 --> 11:55.310 My mistake. 11:56.750 --> 11:59.510 So that's come out of that. 11:59.510 --> 12:00.640 There you go. 12:00.680 --> 12:02.510 Hopefully now we can said it right. 12:02.510 --> 12:02.960 Yes. 12:02.970 --> 12:04.470 A case as scale by. 12:05.310 --> 12:08.880 So point one would be 10 percent and then point not one. 12:08.880 --> 12:10.880 Yeah I did it far too small. 12:11.190 --> 12:13.250 Now everything's all the way over here at the moment. 12:13.260 --> 12:15.690 And we want it all the way over there. 12:15.690 --> 12:19.690 And I'm a child my lighting to the board and pieces as well as the camera. 12:19.720 --> 12:23.540 Everything's all under one mesh object or parenting to that. 12:23.540 --> 12:31.170 And then I can select this and type in a value of zero on all of my location transforms. 12:31.180 --> 12:35.600 And then if I flip over to there we can see smack bang in the middle of the scene. 12:35.610 --> 12:36.280 Excellent. 12:36.300 --> 12:38.900 So you got everything organized as we'd expect there. 12:38.940 --> 12:43.360 Let's just do a test rendering now we've got our save before I do anything else. 12:43.470 --> 12:46.060 Let's do a test rendering and see how it comes out. 12:46.080 --> 12:51.300 Now of course the settings that we had before they are going to be completely off now. 12:51.450 --> 12:55.470 Well she's still got still but some of it in focus hasn't it. 12:55.470 --> 13:02.230 So let's go into here and make sure that the camera itself has the appropriate object. 13:02.250 --> 13:07.670 You know what I'm going to do my queen this time round so let's go into the three of you go to the camera 13:07.670 --> 13:11.510 of you shift and F to move around the scene. 13:12.240 --> 13:15.210 And that's a bit odd. 13:15.210 --> 13:16.780 We still got something else selected. 13:16.780 --> 13:18.860 That's just to shift and F again. 13:18.890 --> 13:20.600 Michelle looking through the camera. 13:20.670 --> 13:21.690 I'm going to presume that. 13:22.200 --> 13:25.960 Funny movement is because it's just parents it's going to clear the parents. 13:26.010 --> 13:31.050 And my cameras disappeared somewhere else Where's our scene or there is over there. 13:31.320 --> 13:32.800 Wow that really did disappear. 13:32.820 --> 13:35.700 So was zooming back to our scene now all. 13:36.180 --> 13:37.650 Well that's a funny angle isn't it. 13:37.650 --> 13:39.220 So that's come around here. 13:40.230 --> 13:45.890 I yes my camera's got some funny rotations on it so I'm just going to clear those rotations and then 13:45.950 --> 13:52.190 find ourselves the right spot moving a bit quickly here so I'm going to use my scroll wheel to adjust 13:52.190 --> 13:53.690 it accordingly. 13:54.850 --> 13:58.620 Still moving a bit quick Fairy galgut a bit more granular control now. 14:00.040 --> 14:05.030 Now there is still a bit of rotation on this why here so I'm going to clear that down. 14:05.040 --> 14:08.790 And I'm just wondering whether my board or pieces has a rotation on it. 14:08.790 --> 14:09.600 Yes it does. 14:09.600 --> 14:12.750 Now that's what was confusing me. 14:13.530 --> 14:14.780 Let's go back to the camera. 14:14.820 --> 14:18.580 Right now we can set it up in an appropriate location. 14:18.660 --> 14:20.680 I focus on my queen I think. 14:21.330 --> 14:23.590 Yes something like that that's what I'm going to go for there. 14:23.610 --> 14:26.670 So on the camera itself of course we need to focus on something. 14:26.670 --> 14:32.570 So I'm going to focus on the Queen the low poly queen there and let's just do an initial render to see 14:32.570 --> 14:33.930 how that is looking. 14:36.230 --> 14:37.740 And post-processing OK. 14:37.780 --> 14:42.760 So the queen has some areas in focus so we're not far away from what we need. 14:42.760 --> 14:48.960 Let's go to the node edita now and will the f-stop I could increase that ever so slightly. 14:48.970 --> 14:55.500 So if we went to 18 it will immediately start redoing it which is good. 14:56.390 --> 15:00.740 And I'm going to increase my threshold is when can I go up to 10 on this if I can keep more of that 15:00.740 --> 15:02.290 in focus. 15:02.320 --> 15:04.430 That's starting to look much better. 15:06.030 --> 15:07.890 And increase this one small. 15:07.950 --> 15:13.770 It is a balance between all of these little bits and bobs and until you get what you want. 15:14.040 --> 15:17.460 I'm like that that's that's in focus enough for me. 15:17.460 --> 15:19.250 Has it got any funny edges. 15:19.250 --> 15:22.190 It's got a little bit around the gist here. 15:22.190 --> 15:27.390 So we could probably increase the threshold just a little bit more so maybe 15. 15:27.390 --> 15:27.830 There you go. 15:27.830 --> 15:32.190 That's that's artefact out away but has everything else now come into focus. 15:32.210 --> 15:32.900 It has. 15:32.900 --> 15:35.370 So let's lower that down to maybe 12. 15:35.450 --> 15:41.360 Yeah that's that's better now that the max Bleu here we can increase as well but we do be careful if 15:41.360 --> 15:42.900 you increase it too much. 15:42.950 --> 15:46.520 It's going to cause it just to take longer. 15:46.520 --> 15:47.890 It's as simple as that. 15:48.920 --> 15:51.500 But there we go we've now got complete isolation. 15:51.500 --> 15:53.350 That's probably a little bit too far. 15:53.340 --> 15:55.970 I'm going to bring that back down to maybe 20. 15:56.100 --> 16:00.050 I think it was on 16 before again going backwards and forwards and just iterating these. 16:00.050 --> 16:00.560 There we go. 16:00.560 --> 16:05.060 That's really focussed in on the queen there and everything else is a little bit blurry. 16:05.060 --> 16:09.890 I'm happy that I'm going to go ahead and save that as an image and then make sure it's in my renders 16:09.890 --> 16:12.370 folder and I'm going to call this chest. 16:12.380 --> 16:19.170 Depth of field and a longer pope dash there and a queen that's one that I showed off earlier on. 16:19.250 --> 16:22.740 So now I've got this one and this one. 16:22.820 --> 16:28.070 And of course you can go ahead and make some wonderful compositions now that you know how to do the 16:28.070 --> 16:31.970 depth of field looking really forward to seeing what you guys come up with. 16:31.970 --> 16:33.080 What did you focus on. 16:33.140 --> 16:34.910 Perhaps you've arranged your scene as well. 16:34.910 --> 16:39.190 You know if you've got a piece that's been knocked flying I can't wait to see ones like that. 16:39.200 --> 16:44.150 But with the depth of field there as well you can really start bringing the whole board to life. 16:44.150 --> 16:48.230 Looking forward to seeing them remember to share them I do love seeing your work and so do the other 16:48.230 --> 16:49.560 students as well. 16:49.700 --> 16:52.020 And I'll see you all in the next video.