@'LoChrome':

Thanks.

I've tried a number of shaders and haven't been happy with any of them. Actually, I've seen very little come that looks right when on a body. I suspect this is something that Iray in DAZ will never do well—it requires at least one map for SSS, since come is really multiple fluids. It needs to have watery parts and more opaque parts for the clumps of sperm. Not to mention that the standard props (like Cum On My Face) are kind of cartoony. To do it well, you'd probably need a fluid system, like Miro does.

I encountered this same issue and came up with a sort of workaround using multiple spot render passes at different transparency and refraction levels, described in this post.

!
@'nothingmore':
! > I wanted to share a few tricks I stumbled upon using the Spot Render Tool in Daz Studio in combination with Photoshop for some cool effects.

A fairly quick way to add wet effects to an isolated area:
After your initial render is finished, crank the Specular Glossiness, turn off any specular maps, and zero out any bump maps on the surface. Use the Spot Render Tool to quickly render the isolated area you would like to appear wet:_
Select the Spot Render tool ( Tools -> Spot Render or Alt+Shift+C )
Open the Tool Settings Pane/Tab ( Window -> Panes (Tabs) -> Tool Settings )
The Active Tool dropdown should say Spot Render. There will be only two radio buttons under Render To: Click New Window._
Align the rendered spot as a new layer in photoshop on top of your initial render. Push the new layer to the bottom, and use the Eraser Tool with a low flow percentage to reveal the glossy area.

Advanced spooge effects using transparency layering:
One of the challenges in getting this particular fluid to appear semi-convincing in 3d is the fact that most current shaders have uniform transparency settings, which doesn't occur in real life. This is a sort of cheat/workaround to that problem. After all, who else would put way too much thought into this?

Basically, follow the same steps but change the Distance Scale + Index of Refraction on the Colored Wax shader (or transparency if you're using a different shader), spot render 2-3 or more times with different transparency levels, layer as you would an hdr image, then mix w/ eraser tool in photoshop.

examples:

http://i.imgur.com/FhE6Lbu.png
http://i.imgur.com/QA63sOE.jpg
http://i.imgur.com/B3O7kVE.jpg
http://i.imgur.com/eq6VLOt.jpg
http://i.imgur.com/iIF0xBO.jpg
http://i.imgur.com/qkibtMT.png
!

I could be wrong, but I was under the impression that so long as the emissive surface is functioning as an off-frame mesh light, geometry lighting achieves the same purpose as setting up a primitive plane w/ emission value, with the added benefit that they are easier to position and aim using the viewport

If you're using Iray I would suggest playing around with geometry lighting instead of the default point lighting system. A strong, concentrated light source throws harsh shadows, which is part of why amateur flash photograph often appears unflattering. Studios use diffusers and bounce lighting to effectively increase the surface area of the light source, and the larger the surface area of your light source is, the softer and more natural the shadow falloff will appear.

Geometry lighting achieves the same effect by giving you the option to define the surface area of your emitter. Here is an example of a basic 4 spotlight setup, first with point lighting, and then using 120 x 240 discs.

The lighting setup is pretty basic and far from perfect, but compare shadow falloff on her appendage, and more even lighting on her face/breasts

You need an nvidia card to take full advantage of Iray rendering in Daz. Your decision on which card will depend on your budget. GTX 1070 or 1080 cards would be good options, but there is no Iray support for either card yet. One developer said the drivers should be ready by the end of July. If you can afford either cards your best option may be to wait

@'eclesi4stik':

I'll add the new gen, 1080 & soon 1070, are really really OP! 1080 destroy all current Nvidia cards, just have a look on benchmarks (even Titan .

1080 does take the lead in gaming benchmarks, but that does not necessarily translate directly to Iray performance. It likely will still be faster, but we won't know by how much until Iray supports cuda 6.1 used in the 1070 and 1080. Titan X does have 12gb vram vs 8gb on the gtx 1080, which allows for somewhat more complex scenes, but the vram on 1080 is faster. 1080 outperforms Titan X on gaming benchmarks due to better DirectX 12 support, higher clock speeds, and faster memory, but render time on previous generation cards has been more dependent on number of cuda cores available for Iray rendering. The 1080 has 2560 cuda cores, and Titan X has 3072. The 1080 will likely still be faster, but the margin will probably not be as dramatic as what we're seeing in video game benchmarks. That said, the Titan X is still over $1,100 and the 1080 starts at around $800 right now, so the value in price to performance ratio is a no brainer.

@'SinCyprine':

i am a cat

I really like the overall aesthetics on this render. Subtle but just suggestive enough, and the morph on the panties looks great.

Nice fluid models. Is the spit bubbling effect from a particular shader or was it done in post?

I wanted to share a few tricks I stumbled upon using the Spot Render Tool in Daz Studio in combination with Photoshop for some cool effects.

A fairly quick way to add wet effects to an isolated area:
After your initial render is finished, crank the Specular Glossiness, turn off any specular maps, and zero out any bump maps on the surface. Use the Spot Render Tool to quickly render the isolated area you would like to appear wet; print screen, cut, paste, and align the rendered spot as a new layer in photoshop on top of your initial render. Push the new layer to the bottom, and use the Eraser Tool with a low flow percentage to reveal the glossy area.

Advanced spooge effects using transparency layering (images 4, 5 and 6):
One of the challenges in getting this particular fluid to appear semi-convincing in 3d is the fact that most current shaders have uniform transparency settings, which doesn't occur in real life. This is a sort of cheat/workaround to that problem. After all, who else would put way too much thought into this?

Basically, follow the same steps but change the Distance Scale + Index of Refraction on Colored Wax shader (or transparency if you're using a different shader), spot render 3 or more times with different transparency levels, layer as you would an hdr image, then mix w/ eraser tool in photoshop.

!

I just wanted to add, I found the spot render tool saves a ton of time if the noise is only affecting a particularly dark area in your render. Try spot rendering the problematic area up to 40k passess or such with 100% divergence, print screen, paste in photoshop, align, layer, erase/heal brush, and presto!

Spot render is also really cool for simulating "wet" effects for certain areas of skin by cranking specular glossiness/strength on that surface, spot rendering the area you want to appear wet, and then blending the layers in photoshop.