# \#opacity **URL:** https://forums.chaos.com/tag/opacity/176.md [Latest](https://forums.chaos.com/latest.md) · [Categories](https://forums.chaos.com/categories.md) · [Tags](https://forums.chaos.com/tags.md) --- ## [Noise with opacity in groundplane and VRaylight](https://forums.chaos.com/t/noise-with-opacity-in-groundplane-and-vraylight/123839)
**Author:** [@visionsbox](https://forums.chaos.com/u/visionsbox)\ **Replies:** 2\ **Last updated:** [November 5, 2025, 8:06am UTC](https://forums.chaos.com/t/noise-with-opacity-in-groundplane-and-vraylight/123839 "2025-11-05T08:06:23Z")
Hey, i have some weired render noise in my alphachannel, when im using an VRayDistanceTex in the opacity of an VRaymtl. It is fading out the alpha to the horizon. When i’m adding an VRayLight (Planelight) and set it in… --- ## [How to exclude certain materials from being visible on the back side of the refraction](https://forums.chaos.com/t/how-to-exclude-certain-materials-from-being-visible-on-the-back-side-of-the-refraction/110289)
**Author:** [@KushKush](https://forums.chaos.com/u/KushKush)\ **Replies:** 2\ **Last updated:** [May 23, 2022, 2:53pm UTC](https://forums.chaos.com/t/how-to-exclude-certain-materials-from-being-visible-on-the-back-side-of-the-refraction/110289 "2022-05-23T14:53:27Z")
I assume that Headline text might be confusing, so I added a picture below to illustrate what I’m trying to remove. I have a main material which is refraction (full white) with IOR 1.01. There is a simple reveal effect h… --- ## [100% Transparent Object Still Affecting Specular Highlights On Other Object](https://forums.chaos.com/t/100-transparent-object-still-affecting-specular-highlights-on-other-object/109844)
**Author:** [@paross20](https://forums.chaos.com/u/paross20)\ **Replies:** 3\ **Last updated:** [April 27, 2022, 8:06pm UTC](https://forums.chaos.com/t/100-transparent-object-still-affecting-specular-highlights-on-other-object/109844 "2022-04-27T20:06:24Z")
Hello, I’m using V-Ray 5 (v5.20.02) and I’m having an issue where I’m trying to use a flat poly plane as a light blocker, but I’m noticing that even if I make the shader 100% transparent on the light blocker plane, it s… --- ## [Curtain opacity and material change blinking](https://forums.chaos.com/t/curtain-opacity-and-material-change-blinking/167603)
**Author:** [@sentinel](https://forums.chaos.com/u/sentinel)\ **Replies:** 2\ **Last updated:** [November 24, 2019, 4:29pm UTC](https://forums.chaos.com/t/curtain-opacity-and-material-change-blinking/167603 "2019-11-24T16:29:08Z")
I have problem with curtain opacity. how to solve this issue. I need a bit transparent curtain so the light from inside can penetrate the curtain.. not totally opaque like a wall and the curtain gone missing if there is … --- ## [Cloth Texture - Self Shadows, can they be turned off?](https://forums.chaos.com/t/cloth-texture-self-shadows-can-they-be-turned-off/89839)
**Author:** [@monksalve](https://forums.chaos.com/u/monksalve)\ **Replies:** 2\ **Last updated:** [July 23, 2018, 4:26pm UTC](https://forums.chaos.com/t/cloth-texture-self-shadows-can-they-be-turned-off/89839 "2018-07-23T16:26:20Z")
I’m tying to make a mesh material with largish gaps that can be seen through. I’m using the cloth texture which is great but I’m running into a problem when I try to create the opacity map: It seems like the Color Gap p… --- ## [Flat Opacity for an entire object?](https://forums.chaos.com/t/flat-opacity-for-an-entire-object/21518)
**Author:** [@ozztheforester](https://forums.chaos.com/u/ozztheforester)\ **Replies:** 41\ **Last updated:** [February 9, 2017, 4:27pm UTC](https://forums.chaos.com/t/flat-opacity-for-an-entire-object/21518 "2017-02-09T16:27:22Z")
Hi All, I thought it would be easy enough render an object with an entirely flat opacity/visibility but it wasnt’t. I am trying to get 3d trees and people to be rendered as flat objects but with flat opacity (like the o… --- ## [Opacity of any kind is taking forever](https://forums.chaos.com/t/opacity-of-any-kind-is-taking-forever/55755)
**Author:** [@datalost](https://forums.chaos.com/u/datalost)\ **Replies:** 2\ **Last updated:** [October 27, 2015, 6:21pm UTC](https://forums.chaos.com/t/opacity-of-any-kind-is-taking-forever/55755 "2015-10-27T18:21:08Z")
Hi! I usually don’t post anything here but this time i really don’t know how to solve it. Last year i got a job to render some infographics about how some valves work. I had to render the valve so it looked real and th… --- ## ["clip" alternative to Opacity map](https://forums.chaos.com/t/clip-alternative-to-opacity-map/51133)
**Author:** [@ricoholmes](https://forums.chaos.com/u/ricoholmes)\ **Replies:** 2\ **Last updated:** [September 24, 2014, 11:20am UTC](https://forums.chaos.com/t/clip-alternative-to-opacity-map/51133 "2014-09-24T11:20:40Z")
Hello, I know this is a long shot - but is there anything I might have missed as a “clipping” alternative to using an opacity map ? I’m tasked with animating a boolean on an extraordinarily complex model (hundreds of c… --- ## [VRayLightMtl with opacity map](https://forums.chaos.com/t/vraylightmtl-with-opacity-map/49983)
**Author:** [@andy\_butler\_7](https://forums.chaos.com/u/andy_butler_7)\ **Replies:** 3\ **Last updated:** [May 30, 2014, 8:34am UTC](https://forums.chaos.com/t/vraylightmtl-with-opacity-map/49983 "2014-05-30T08:34:42Z")
Hi all. I have a simple VRaylightmtl with an opacity map applied to remove the sky. The opacity renders fine where it is visible through the camera except in reflections where the opacity map doesn’t show at all and the… --- ## [Problem getting Alpha from both Refraction and Opacity combined](https://forums.chaos.com/t/problem-getting-alpha-from-both-refraction-and-opacity-combined/44317)
**Author:** [@dennisqdw](https://forums.chaos.com/u/dennisqdw)\ **Replies:** 3\ **Last updated:** [February 26, 2013, 9:06am UTC](https://forums.chaos.com/t/problem-getting-alpha-from-both-refraction-and-opacity-combined/44317 "2013-02-26T09:06:31Z")
Ok, here’s the situation. Make a vray material and put for example, a falloff map in the opacity slot. Render and you can get an alpha falloff (going from opaque to transparent) at the edges of a sphere, for example, as … --- ## [Opacity Map on refractive materials.](https://forums.chaos.com/t/opacity-map-on-refractive-materials/43065)
**Author:** [@dangerweenie](https://forums.chaos.com/u/dangerweenie)\ **Replies:** 1\ **Last updated:** [October 23, 2012, 9:02pm UTC](https://forums.chaos.com/t/opacity-map-on-refractive-materials/43065 "2012-10-23T21:02:07Z")
Hi, I’m having an issue with mapping textures to the “Opacity Map” attribute in the VrayMtl in Maya 2012. The issue is specific to glass materials or materials with refraction. -When doing anything to the “Opacity Map… --- ## [Ignore opacity for MultiMatte element](https://forums.chaos.com/t/ignore-opacity-for-multimatte-element/41594)
**Author:** [@peprgb](https://forums.chaos.com/u/peprgb)\ **Replies:** 3\ **Last updated:** [June 1, 2012, 5:55pm UTC](https://forums.chaos.com/t/ignore-opacity-for-multimatte-element/41594 "2012-06-01T17:55:59Z")
Is there a way so that i can get myr red (g o blue) matte rende relement ignoring the opacity of a material? while it’s not ignored in beauty pass of course. I have a perforated steel sheet and want to slect all, not ex… --- ## [Opacity, minimum distance for view throw objects?](https://forums.chaos.com/t/opacity-minimum-distance-for-view-throw-objects/41525)
**Author:** [@peprgb](https://forums.chaos.com/u/peprgb)\ **Replies:** 2\ **Last updated:** [May 24, 2012, 3:37pm UTC](https://forums.chaos.com/t/opacity-minimum-distance-for-view-throw-objects/41525 "2012-05-24T15:37:04Z")
Hi, I have one simple box with Diffuse+Opacity map, behind this are some other boxes with white and red VrayMtl (at 0.108m distance, System units: m), when rendering these are invisible, here the video showing my issue. … --- ## [Vray Light Material : Opacity Channel deleted by copying](https://forums.chaos.com/t/vray-light-material-opacity-channel-deleted-by-copying/40123)
**Author:** [@CubeCreative](https://forums.chaos.com/u/CubeCreative)\ **Replies:** 0\ **Last updated:** [January 26, 2012, 1:56pm UTC](https://forums.chaos.com/t/vray-light-material-opacity-channel-deleted-by-copying/40123 "2012-01-26T13:56:51Z")
Hi ! All is said in the title. Since the 1.5sp5 (and the 1.5sp6) version of Vray, a bug have appeared. When a vray light material is duplicated or updated, even if it is in a multi-sub, vrayblend, shell or whatever, th… --- ## [Transparent Alphas using an AVI, how to make it work?!](https://forums.chaos.com/t/transparent-alphas-using-an-avi-how-to-make-it-work/39231)
**Author:** [@JOAN\_LORD](https://forums.chaos.com/u/JOAN_LORD)\ **Replies:** 1\ **Last updated:** [November 2, 2011, 10:05am UTC](https://forums.chaos.com/t/transparent-alphas-using-an-avi-how-to-make-it-work/39231 "2011-11-02T10:05:10Z")
Hey Guys, I’m trying to re-create an “Aqua Graphic” Aquagraphics | Water Curtains | MTFX | Special Effects - it’s a metal frame that drops small bits of water in a sequence to create a shape or text before it hits th… --- ## [Vray Diffuse Trasparency & SU Material Opacity Conflict](https://forums.chaos.com/t/vray-diffuse-trasparency-su-material-opacity-conflict/37732)
**Author:** [@kohishop](https://forums.chaos.com/u/kohishop)\ **Replies:** 3\ **Last updated:** [June 30, 2011, 9:36pm UTC](https://forums.chaos.com/t/vray-diffuse-trasparency-su-material-opacity-conflict/37732 "2011-06-30T21:36:33Z")
When I applied “Gray\_Wall\_Vertical” vismat from the Chaos website to my existing material, the related surface becames transparent; however, the rendering came out just fine. It appears to be the Vray Diffuse Transparen… --- ## [Light Opacity / Exclude option at the same time?](https://forums.chaos.com/t/light-opacity-exclude-option-at-the-same-time/27244)
**Author:** [@olika](https://forums.chaos.com/u/olika)\ **Replies:** 2\ **Last updated:** [February 22, 2011, 1:41pm UTC](https://forums.chaos.com/t/light-opacity-exclude-option-at-the-same-time/27244 "2011-02-22T13:41:22Z")
Hi, just a little question i couldn\`t solve today. I did the lighting for an exterior car shot with a photographer today. It\`s a little funny cause while we worked i told him something about the advantages of light pl… --- ## [zdepth with opacity mapped geometry](https://forums.chaos.com/t/zdepth-with-opacity-mapped-geometry/23937)
**Author:** [@Brendan\_Coyle](https://forums.chaos.com/u/Brendan_Coyle)\ **Replies:** 2\ **Last updated:** [May 4, 2010, 9:05pm UTC](https://forums.chaos.com/t/zdepth-with-opacity-mapped-geometry/23937 "2010-05-04T21:05:51Z")
Who knows a trick for rendering frames that give zdepth information with opacity mapped geometry? I have some objects that look like clouds, camera facing planes with opacity. I want to try and create some sort of zdep… --- ## [VrayProxy as reference object - no opacity?](https://forums.chaos.com/t/vrayproxy-as-reference-object-no-opacity/20722)
**Author:** [@Kai\_Hopermann](https://forums.chaos.com/u/Kai_Hopermann)\ **Replies:** 2\ **Last updated:** [May 27, 2009, 7:51am UTC](https://forums.chaos.com/t/vrayproxy-as-reference-object-no-opacity/20722 "2009-05-27T07:51:55Z")
Hello, I’ve got a general question about VrayProxy. Is it right that VrayProxies don’t show any kind of material with transparency in it when they are used as reference object? Here’s my scenario: I’m using four diffe…