Jay Versluis
patreon
Changes to working with Mesh Lights in Daz Studio 4.20
🕑 Added 2022-02-23 12:00:06 +0000 UTCThere have been some changes to the way Mesh Lights work in Daz Studio 4.20. When turning an emitter (nearly) invisible on the Surfaces Tab, the light loss through transparency is now linear. This means when we have 7 digits behind the comma in transparency, we need to add 7 zeros to our Luminance value to compensate. Let me show you how it's done.
I'll release this video sometime this week, as soon as I have time to put a handsome thumbnail together. Enjoy!
Comments
Jay Versluis
I just did a test, the other thing that no longer happens in 4.20 that the emitter itself is no longer rendered. As a result catch lights created by a mesh light no longer appear. Ideally we'd have an option like "legacy" and "new" so we could use whatever suits us best. I have a feeling this isn't actually a Daz Studio change, but has probably been introduced with a new version of Iray.
Jay Versluis
It's probably more difficult than just adding the zeros. The previous system also required an adjustment when you made the geometry invisible, but it wasn't linear. It wasn't logarithmic either, it was more like a "total fantasy scale" (or so it appeared). If you setup the lights manually, perhaps there's a way to work out a value that needs to be added to compensate, I always did it in-situ until "it looked OK". I can see how having to re-do that for scenes you have yet to render isn't an option. KindredArts was also taken by surprise, so he's currently updating his product - but that'll take some time. He's still debating whether to push an update, or release a new version that will work with 4.20+ so that the old product and the older version of DS at least stay compatible . I'm all for change, but this whole "no notice, no optional workaround, no announcement" isn't fair to users.
