Contrast shadows in V-Ray

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6 Jun, 2011 Naugal
6 Jun, 2011 # Re: Contrast shadows in V-Ray
Good afternoon, ladies and gentlemen) Please tell me how to make shadows render spanning more pronounced? On visa, presented below, I want more shadows to give the interior volume. For example, the shadow of the stools is not visible ... Interested Vray it means, rather than post-processing.


6 Jun, 2011 RenderStuff (Staff Author)
6 Jun, 2011 # Re: Contrast shadows in V-Ray
Naugal, hello! First the Color mapping , should be the same as we advise. In particular gamma value a little lower than 2.2 will add the image contrast. Secondly, the right balance GI values ​​component. Look lesson on Indirect illumination . Namely, the optimal values ​​of Multiplier for Primary and Secondary bounces. This will also reduce the power of "bleaching" or "vysvetlivaniya" GI shadows component. If we talk about the "third", the problem of "flying chairs" is low as the Irradiance the Map . Shadows literally washed away by interpolation with a deficiency of the original GI samples. Mingling, bright (lit) and dark (in the shadow areas) samples due to give a gray color instead of black or light, which inevitably reduces the contrast, with a lubricating shadows in the fine details of the scene, such as the contact points between the legs of the chair and the floor. No post-processing can fight this roofing%D0 to increase the quality of IM. How to do it and how to regulate the details of IM read the lesson about the choice of the GI engines . In particular, the head of the Common Problems the GI - that's about it😉 Now let's go directly to your renderer. Do you "flying" stool is almost black on the floor. Of course, the gray shadow on it simply can not be seen, for example, they are visible to a light yellow carpet from the bed. In addition, your gender does not reflect. Even the floor mat must still reflect only the blurred reflections, and a small quantity of reflection. Do 3d flooring material is more reflective. Then, to show more detail, in particular under the legs of stools and thus the illusion that it is floating above the ground, will be gone. Coming back to your question literally, on how to make the shadows more pronounced, apart from the above%20priemov, sharpness (blur) shadows depends directly on the type and size of the light source in the scene. The more it is, the more blur the shadow and vice versa. We believe that you should VRayLight and its value is determined by the size of the window opening literally. Therefore, to reduce the size of VRayLight Plane would be inappropriate. No, of course you can do it, with the missing image brightness compensating value Multiplier parameter in the scroll-Ray the V: colormapping , but it will not photorealistic. Yes, shade on the small details become clearer, but it is their sharpness on other details of the scene would not be appropriate. What is clear you can see the shadow at not render by looking at the area with luminous floor lamp, which is mounted in a small (geometrically) light source😉


6 Jun, 2011 Naugal
7 Jun, 2011 # Re: Contrast shadows in V-Ray
Thank you very much) Gamma in color mapping 1.8, try to put your values ​​in the intensity of the primary and secondary coverage and increase the number of prepassov. About half podmeteili you exactly, but it is the recognition of necessity due to the fact that the mirror on the cabinet gives awfully glossy highlight on the floor and make it more opaque, no matter how I twisted the material settings I can not have ... The ball looks like it is in the materials with a matte glossy, but in the render - reflecting or slightly better than glass) I would certainly understand ... Lighting in price - vray sun + vray light in the portal mode, since it is only one of the types of rooms, the narrow window is not desirable. I try to use your advice, the result of share)


6 Jun, 2011 RenderStuff (Staff Author)
7 Jun, 2011 # Re: Contrast shadows in V-Ray
You can show itself to reflection natroykami floor mats and mirrors, and we'll show you what's wrong😉


6 Jun, 2011 Naugal
17 Jun, 2011 # Re: Contrast shadows in V-Ray
Good afternoon, RS. I'm sorry, that was delayed) That's what I did. Helped to set up your shadow values ​​of primary and secondary bounces, as well as increasing the number of prepassov. However, for myself concluded that much easier all the shadows and highlights to make clearer and brighter in Photoshop, Vray means take unreasonably large amount of time with a slight improvement in the result🙂🙂 In this regard, I would like to see your ways postprocessing renders as a lesson ( or at least answer the question), I think that in this respect, you too can help beginners like me learn a lot) in the course of reading your answer ask this question (going back to our sheep): if the light source size affects the sharpness of shadows then can they make such reducing the size of the Vray sun, or in this case the light source is considered to be sky portal? And now on the floor material - these settings (color in the scene changed to brown kolorkorrektom): Blick when rendering gives a very glossy, struggled with this in the best traditions of Russian scrap - banal reflect a decrease to the minimum value)


6 Jun, 2011 RenderStuff (Staff Author)
19 Jun, 2011 # Re: Contrast shadows in V-Ray
Yes exactly. There is no point in doing 3d, due to a significant increase in computation time, something that can be done in 10 minutes in photoshop. Of course, nominally faithful rendering setting is no doubt this is the right approach. It is especially justified, if you create a series of renderings of five or six images and a long post-processing of each will be particularly tiring. Then it happens, just wait a couple of three hours (or even 5-6 hours) is simpler than an hour to sit Kolupaev every image in Photoshop. Especially, if the timing is not very tight. However, generally, in many cases, the desired result still easier and faster to obtain postprocessed it. We are all against the "sport" 3d, when post-processing is considered akin to doping and render even the most beautiful, but not done in a pure 3d, regarded as a scam. This is really poor approach to think so. After we achieve photorealism, not objectifiedelyaem who is the trideshny trideshnik😁 If we talk specifically about our approach to post-processing, it is common, there is no such. Each image individually. None of these values ​​and techniques, applying to any image - an excellent result. We do so post-processing. We look at the rendering. For example, he left little contrast. Then we direct the banal contrast as long as the image becomes natural. As trivial and color balance. If the final rendering looks much "cold", for example, because of the excessively high blue light environment, then add red and yellow tones. If the image many red tones or overly high saturation, then governed by saturation. Similarly, the clarity and other parameters of the bitmap. We need just to look at the concrete render and make a decision about cheg%D0 lacks 🙂 If affect specific methods, such as "our sheep," that is a very easy way feykovat (counterfeiting) and lower shadows on the earth "flying chairs"😁 But we planned a lesson on the subject and be sure to write it, because in the discussion, without the incremental and detailed illustrations, without a description of the concept and some basic concepts which are not all familiar with - the subject is not disclosed. Regarding the size of the light sources, the main source you have just Skylight portal. VRaySun in this case is only the additional light source illuminates only a small part of the room on the floor near the window. Yes, changing the size multiplier to the VRaySun, you can adjust the sharpness of shadows, but only shadows of the VRaySun, ie, in the zone of a small glare on the floor near the window. The rest of the shadows in all other areas of the room, it was cast in VRayLight Skylight portal mode - will remain unchanged. By dressing%BEdu mat, then you have a very high value Subdivs. For wood, more than 8-12 Subdivs do not really need. Safely reduced to 8 and only if they make a noise reflection, you can pick up. Although in most cases, if the noise there is, on the floor, he is almost imperceptible. In addition, to save on glossy (glossy reflections), you can select the type of flare is not the Phong, and Ward. The value Hilight glossiness can be safely increased to 0.8. The other parameters are not so important. Sometimes interesting effect can be achieved by placing a card, such as the Diffuse, Reflection in the slot. Then, the reflection will become uneven and diffuse color shade of the wood. Main slightly reduce the amount of use of the card in this slot by changing the percentage of application rollout Maps. For example, up to 30-50%. The same applies to Refl. glossiness (Hilight glossiness). Here's a look how to make material 3d model of a square wooden parquet . You can be leveled at it, or even as an experiment to replace your floor on the IPT%D1 ku (under the floor) and see how it looks in your scene correctly configured material flooring. This flooring is made geometry, but you can just use the material by applying it on the floor surface in the 3d model of your premises. In general, we advise, often look in our archive with 3d models and if you need a material that is considered similar models and downloading, meet with the settings you liked the mat, applying them already in their model😉


30 Jun, 2011 denny
30 Jun, 2011 # Re: Contrast shadows in V-Ray
But if there is no contrast in small details (eg molding on cornices or inlays on furniture), which often happens, the contrast enhancement in Photoshop will raise it to the entire image.


6 Jun, 2011 RenderStuff (Staff Author)
30 Jun, 2011 # Re: Contrast shadows in V-Ray
Yes exactly. But he and Photoshop to do what can do render. At least by simple methods. For such situations, there are masks that allow you to apply the desired effect of area. Here's a look a lesson about how to do vayrfreym render, in particular the chapter on post-processing in the rendering of Photoshop 😉


25 Oct, 2011 Kseniya
25 Oct, 2011 # Re: Contrast shadows in V-Ray
Tell me please!!! what to do with this bright flare on the floor! I tried all settings ... the lighting in the room changes and this is not the highlight ((used VRayLight V-Ray Sun and Sky.


25 Oct, 2011 Maks (Staff Author)
25 Oct, 2011 # Re: Contrast shadows in V-Ray
Good afternoon, Ksenia! Insert a comment in a direct reference to the image of a bright flare on the floor, then we can tell😉


25 Oct, 2011 Kseniya
25 Oct, 2011 # Re: Contrast shadows in V-Ray


25 Oct, 2011 Maks (Staff Author)
25 Oct, 2011 # Re: Contrast shadows in V-Ray
Xenia, set in Sun setting value intensity multiplier 0.01. If it is too dark, then in quietly rises. More information about the glare with V-Ray read this link😉


25 Oct, 2011 Kseniya
25 Oct, 2011 # Re: Contrast shadows in V-Ray
I changed the settings and changing room is a highlight for some reason! (


25 Oct, 2011 Maks (Staff Author)
25 Oct, 2011 # Re: Contrast shadows in V-Ray
Then we'll put all the settings again, as described in the topic at the link above. If you still can not get rid of this problem, then out with it to the topic of screenshots of all of the settings and we will have to deal with your particular scene 👌


25 Oct, 2011 Kseniya
25 Oct, 2011 # Re: Contrast shadows in V-Ray
Thanks, I will try)


19 Feb, 2015 Tanya
19 Feb, 2015 # Re: Contrast shadows in V-Ray
Good day) Please tell me how to do so that the shadows when rendering were very contrasting? I want to create a room where it will be a very important game of shadows. I like the effect of the scene, but when rendering all the shadows disappear (How to be in the scene: render:


19 Feb, 2015 Aleh
19 Feb, 2015 # Re: Contrast shadows in V-Ray
It is difficult to advise you on the settings, for all it looks like some kind of art renderer🙂 I think there is no shadow of the global illumination. Try disabling GI and see what will result.


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