how can I get an underwater blue scene for a daz render?
Toobis
Posts: 993
in The Commons
I am trying to to do an underwater scene of a woman swimming but am having difficulty finding an actual light blue underwater setting.
So far I have the sea bed done with this which is good http://www.daz3d.com/with-the-fishes but I don't know how to actually have the underwater environment so its all blue. I am not sure what the proper word for it is lol but you probably know what I mean. Can anyone recommend a product for this? thx.

Comments
Iray or 3Delight or Poser?
Edit for more info: if you want Poser or 3Delight, I know just the things. If you want Iray, I'd like to know too.
Edit again: Water caustics is what you are looking for.
Poser: http://www.daz3d.com/underwater-ambiance-for-poser
http://www.daz3d.com/ultrumarine-for-poser
3Delight:http://www.daz3d.com/underwater-ambiance-for-daz-studio
http://www.daz3d.com/ultrumarine-ocean
Iray: http://www.daz3d.com/laguna-underwater-lights-for-iray
No I don't think you get what I mean. I mean just the basic blue water that engulfs the screen (for 3Delight or Iray) and NOT the lighting effects.
For Iray, try creating a cube primative large enough to cover the whole scene (including the camera), and then adjusting the shader settings.
I just threw this together as a test of concept, with Translucency weight at 1 (color white), Refraction Weight 1, share glossy inputs off, Refraction color is a cyan, Refraction index is 1 (you can mess with that to get something better, I'm sure) and refraction roughness is .35. Also Thin Wall is off.
For Iray there is also a volumetric water included with TerraDome 3
Yeah, no, I still think Ultrumarine is a good set for what you are looking for. It is a volumetric underwater environment, but the DaWaterRat gave good tips too.
If you go the volumetric cube route, I think Mec4D has a few different volumetric water shaders in her Volume 2 set.
http://www.daz3d.com/mec4d-pbs-shaders-vol-2-for-iray
I found an underwater photo from Pixabay which I used as a backdrop for my underwater scene:
One of the simplest approaches is to get a distance mask and overlay a blurring blue mask.
My first impulse was to suggest the Atmosphereic Effects cameras by Age of Armor, but I wasn't sure if they were still working in 4.9 or not.
Yeah, they work.
I'm not positive the 'set diffuse to 99%' flagging works, but 'category: foglight' does.
Hi Will,
When you say, "get a distance mask..." do you mean create one inside Daz somehow so that it corresponds to the relative distance between the camera and each object in the scene or did you mean use a generic distance mask that simulates some sort of two-point perspective distancing? I'm assuming you would apply the mask in post to achieve the effect. This reminds me of the approach used by PixelSquid when using their pre-rendered 3D objects in Photoshop.
Yes.
With Iray, if you go to Render Settings, Advanced tab, Canvases.
There's a checkbox for 'Canvases,' click it, hit +. You then get a Beauty canvas. Hit + again, and click on teh second Beauty canvas, switch to Distance canvas.
Now, when you render and save file Bloo, you end up with:
Bloo.png
Bloo/Bloo_Beauty.exr
Bloo/Bloo_Distance.exr
The first file is a regular 8 bit render. The second is a 32 bit render, which can be great for fine-tuning tone and lighting without artifacts. The third file is a 32 bit grayscale image based on distance to the camera -- you can manipulate the range of values (with Levels) or the relative distribution of values (with Curves) in Photoshop and use directly as a layer, or as a mask.
In 3DL AoA's Atmospheric cameras includes a Distance camera to do something similar.
I was wondering if there was a way to use Canvases to do that; I didn't know the option was directly a feature. That's pretty handy. I need to experiment with that. Do you use the Otoy plugin to open the .exr files in PS or is there another option?
The version of Photoshop I have opens exr files without a problem. It needs to have HDR toning or converted to 16 bit to really be usable, but once you get the hang of it it's not hard. It defaults to some funky 'local adjustment' method, which is useful but tricky. If you switch to Exposure method, adjusting it to -13 exposure works in 90% of the cases.
For any GIMP users out there, the newest beta version of GIMP will also open .exr files. I've found a couple of filter glitches with that version of GIMP, but it seems pretty stable for everything else so far.
Not to hijack, but ... any idea how to import canvases into GIMP? I keep getting errors.
Which version of GIMP are you using?
2.8.14
GIMP 2.8.14 doesn't accept .exr files. You need to use the GIMP beta 2.9 which you can get from the main GIMP.org site. I got my version of the beta 4.9 from Partha's site as he has it set up so that you can use the NIK filters that were recently released which I wanted to try out. The only problem I've notice so far with the beta as far as stability issues have been a couple of filters have notes and don't actually load. I haven't had anything crash on me yet. I, also, haven't gotten rid of 4.8 yet either as I like to keep the last stable version that I'm familiar with around.
Ah. Okay. Thanks. :) (I can also always drop back to 3DL and use the AoA depth camera. :))
I still struggle with 3DL so I'm no help there.
Actually a very good question, I've wondered the same myself. Very challenging to achieve beautiful blue water like ocean scenes of coral reefs. What I have discovered is converting ground planes to blue color helps. Hopefully someone can chime in on some under water material settings.
I was recently struggling with this myself. I first tried to use the AtmoSphere from http://www.daz3d.com/aquatica-reef which worked great for hazy water, but needed a different lighting effect.

I briefly tried creating a sphere with some haze material on it (I forget what materials I tried) but it wasn't working out well and you could see shadows on the edge which had to be in front of the camera because the camera cannot be inside of it or the material wouldn't work. Due to a time crunch I then abandoned that, changed lighting, replaced the haze with a pair of nested spheres that were partly transparent, stuck a plane in the background and put a spotlight on it, essentially just creating a backdrop. Not a very elegant way to do it, but it got the job done.
Fantastic ocean scene
Nice work hehehe I like that image. Thanks everyone I think I get the hang of it for now anyway.