 Hello my name is Tobias. It's a third time that I have the honor to be here at the conference and to Say you something to and show you something which hopefully is interesting to you But the very first time that I trust the internet and This means something because I never did this before so everything is running with the internet Give a big applause to all the people who care about the internet. It's great Okay, let's see if it is it's stable my talk is about look development with cycles and I'm Very happy to talk about this because this is a very serious topic and in our commercial projects We have a lot to do with look development and today I will cover this here in my presentation So, um, for example, let's take this customer case Let's say you have a customer and the customer ordered you to do a rendering of an interior scene an architectural scene with a couch in the middle and painting on the on the back and floor and by the way, this is This is not a real customer project, but I I think it's a good to explain a look development and No, imagine that you have done everything right. You had a Briefing from the customer. You had a pre-production meeting You've got sketches. You have made pre rendering and test renderings And so you could be happy that everything on in about the information you need you have already and You start doing your job and after a while you finish the scene you switch on rendering you're waiting a couple of hours until it is finished and then you're proud of your work and you go to the customer and Present the results to the customer and what Happens very often is that's a customer says may be we can change something For example, this is a is a couch. It's more looking reddish and if the customer wants to Get the couch in another color for example black You realize that this was never mentioned before and that you have open you have to open gimp or Photoshop to arrange this and But you can handle this this is not a big headache for you, but unfortunately the customer continues the customer starts to think about Giving this couch here on the left a bigger room a bigger space in the image and to let the spot that I have placed here, which is Looking and directing light to the center couch To change the lighting a bit so that the couch on the left is also illuminated or for example That's the light are coming from the window into the room and illuminates also this couch So if the customer Tells us to you you are thinking oh my god this this would require me to do all the rendering again so you have an again to wait hours until your renderings finish and You are you are coming very soon out of your budget and this is a problem that we are facing in Every project and we need to cope this because we also want to satisfy our customer So what can you do? let's assume you have a couch which is in the more a reddish color dark red color and you want to Change the color to make it looking more black then at first you have to prepare a mask this mask It's not easy to set because you have some kind of de-focus in your scene You have a blurry background and the blurry foreground and you have to place a mask Exactly to to catch all the pixels from the couch, but after you have done this you can not only just Decrease the brightness in using gimp or Photoshop because You will lose all your highlights the highlights which you can See here on the on the couch and are very important to Transport the material of the couch so this gives you a headache and you have to cope with that you have to to set up a pipeline that can cope with problems like this and This is exactly the topic. I want to talk about today. This is look development look development covers two Disciplines the first is to really discover and define an artistic look so that is appealing that is Presenting a product in the best possible way, but also the second Topic is also very important here And this is to build up in technical infrastructure and implementation to achieve The artistic look defined in step one So this is look development on the one hand It's very artistical on the second hand. It's very technical and you have to deal with both somehow So what you can do in most cases is use render passes because when the passes allow you to manipulate all portions from your image Very in a very high detail without destroying other stuff in your image And for example, you have the ambient occlusion pass or the glossy pass or couple of tons of other passes in blender and now the question is Which passes should I use to meet the customer needs and How should I combine them to create a beautiful image at the end? And to answer this we can go into the cycles manual then there is Sketch or as an illustration and this is also the most important slide of my talk and This is this one it Defines mathematically How all those passes all those render passes can be combined or must be combined to achieve The combined image the combined image is a default render output of blender But if you render all those passes here diffuse direct diffuse indirect Translucency and so on and you combine it as it is shown here Where the plus is you can add the passes where the cross is you have to multiply the passes If you do this exactly as it is shown here, then you get the combined image You can compare it to the combined image that is coming out of blender directly and there is no difference So this is the way how compositing in blender works and the good thing is If you have understood this way how blender compositing works you can manipulate single passes of this scheme and To show you this I would like to start a screencast That is still loading Those a bit too long so that I switch to my plan B so this is a screencast I made some minutes ago and What do you here have is all those render passes in a interactive application? This is Blender. This is the Blender compositor and for example what you can see is That it's very easy to change the color of the couch For example make it more blue or make it more reddish or make it black. This is Not a problem. It's also very easy to change the color of the spotlight because the spotlight is the the only light here in the scene and if you change its color then the color changes everything in the scene you can also render out all passes for another light source for example the windows and I will now switch on the windows and you will see that immediately the scene is flooded with additional light So this has nothing to do with the hours of render time. It would take to render again the scene This is all done in compositing So the left on the right window. I will add colors for the left in the way I make it a bit red orange like and the right window a bit blueish to to mimic to simulate the darkness or the darker day outside and I switch on a specific look up table and then I can achieve a look That is appealing at least to me and this is the way how look development Works as it best. You can iterate very fast. You can try out things and you have to try out things. This is the the bread and butter of any artist of any compositing artist you have to iterate also together with the customer Now I make the lighting a bit more dramatic in order to get more contrast. I switch off the lights from the window and I do also overdo the spotlight Also the spotlight has a white color and you cannot go whiter than white So this is a limitation that you would have in your normal compositing software But if you have the single passes of the spotlight you can also increase the white to very high level and to and increase the energy So here is the last example Which what is also possible is to set the focus point In compositing and I will show you this now Right now the focus can can we dim the lights a bit? The focus is somewhere here in the front The spotlight here is very bright. It is very sharp And the wall in the background is very blurry and now I can just interactively Create a Defocus and I will let the camera now focus to the wall And you can for the first time see the paintings and now the defocus is coming back Okay, so this is what you can do with compositing and this Helps you to work with the customer because you need that kind of iteration if you are making Work with a customer who is not In a 3d and and needs to To see a different by variations This is a progress that I would love to see in my Projects at first we discuss the shape then we discuss material light background and camera and We have kind of agreement with the customer. So that's a customer Agrees on the work that was done so that we can go on to the next level And the problem is that the customer is not Um It's not in the 3d area and cannot understand how we are working. So for example, if I present to the customer A clay rendering like this Then the customer is some kind of yeah, I'm not very happy because the customer thinks. Oh my god. This is clay and I don't like to see my product in clay And um, you have to explain a lot. So this is not working So if I work with you, this would not be a problem You can just ignore lighting and material and environment and camera And you can focus on the shape which is currently our main focus But with the customer This is not working and therefore most of our projects Are not looking like this but are looking more like this and this gives you a headache because The customer wants to come back to all Decisions that we have made before And whenever you nail him down To approve something then he finds a way to circumvent this So we are always starting again to go on everything and You need a pipeline and this is my talk about That allows it to go back to the very first thing Even if you just are close to release in the next days Okay, five minutes left um, we are doing a lot of projects which Oh the internet is back Which I will just show shortly and all our projects are about customization So whenever a customer has individualized products products that can be customized Then it is required to render them live because you cannot make photos and show them in the webshop And for this reason, um, they use Life rendering technology and we are completely Building the technology on blender and we have a blender in the farm That is connected to the applications and to the GUI In the front end and can render live the images so that we can serve very Different customers in Different branches for example for the magnifying glasses or also in the fabrics industry Which is coming here. So this is a fitting simulator. So The customer can set up the body sizes and we simulate how the claws will look like Okay, um As I'm a bit late, I will skip some of my slides. So Light development is very important, but I have to skip it even a material development also very important environment development I will skip also, but Here I will spend two minutes Because this is very important and interesting To achieve a specific look It's very easy Doing this because blender has So-called lookup tables included lookup tables Transform a specific color From the input space to an output space and they were coming from the ages before digital photography when the photographers had to buy films of specific sensitivity And some films were made for daylight photography and some for interior photography Some can take a better red colors and some other And then some prefer other colors and in blender you can choose among 66 lookup tables and I have Discovered those and I made An overview where you can now see all those lookup tables What do they do with your a render output? You can just go through them. You see the link At the top and then you have an idea. What is How is your image changing? I done this Yesterday night or I started to do this yesterday night because um yesterday somebody Yeah told us that it's very difficult to do color management in blender and to understand color management So I started to look for an Survey how to do it, but actually I found none So I started to to create the survey on my own And the first part is already finished. This is the overview of the lookup tables and the second part And we'll finish tomorrow. Hopefully and there will I will explain how to use histogram waveform and vector scope to create a look Of your images that you like Okay, this was my presentation. I hope you learned something. Thank you very much for being here. Thank you very much for watching. Bye. Bye