Improving hair renders

Various informations and discussions about DAZ Studio
Post Reply
User avatar
Lakys
Site Admin
Site Admin
Posts: 5189
Joined: Sun Dec 12, 2004 3:30 am
Contact:

Improving hair renders

Post by Lakys » Sun Feb 08, 2009 10:05 pm

This is the English version of this original document.

I shall use Juni hair which compatible with A3, V4 and possibly some others (V3?).

Here is a first render.

It uses two distant lights:
- one 100% slighty from the right
- one 50% from the top

The skin has been optimised using Eisha (35% ambient).

The hair is unchanged and use the 02-Lt Brown.pz2 MAT pose.

The render quality is already very good, which can be put to the credit of the artist who made the textures. :)
Attachments
juni01-untouched.jpg
Untouched hair
juni01-untouched.jpg (311.53 KiB) Viewed 1134 times

User avatar
Lakys
Site Admin
Site Admin
Posts: 5189
Joined: Sun Dec 12, 2004 3:30 am
Contact:

Improving hair renders - Ambient

Post by Lakys » Sun Feb 08, 2009 10:09 pm

First stage: adapt the hair lighting with the character, which means having the same ambience level.

I select in the surface tab, Juni_Hair (which highlights the 6 surfaces at once), and I set diffuse at 65%, ambient to white with a 35% strength.

Et voilà... (no translation :P)
Attachments
juni02-ambient.jpg
With ambience
juni02-ambient.jpg (315.87 KiB) Viewed 1114 times

User avatar
Lakys
Site Admin
Site Admin
Posts: 5189
Joined: Sun Dec 12, 2004 3:30 am
Contact:

Improving hair renders - Bump mapping

Post by Lakys » Sun Feb 08, 2009 10:15 pm

In order to add more details et to make it uneven, bump mapping is a good choice. As no bump is available, we shall use the color map (the one used in diffuse channel). The surface called middle use another map than the 5 others. Using the surface selection tool is really handy for that.

Here is the result with the bump map.

Observe the improvement in details.
Attachments
juni03-bump.jpg
juni03-bump.jpg (329.88 KiB) Viewed 1108 times

User avatar
Lakys
Site Admin
Site Admin
Posts: 5189
Joined: Sun Dec 12, 2004 3:30 am
Contact:

Improving hair renders - Displacement

Post by Lakys » Sun Feb 08, 2009 10:19 pm

I like to push things to the extreme, including hair...

So let's add some displacement... But where can we find a different map? There still remains the transparency map. And it contains quality data. It will allow to add some thickness and to get a nice wet effect.

See by yourself. And you can always adjust the displacement strength to increase the effect or make it less visible.
Attachments
juni04-displacement.jpg
juni04-displacement.jpg (345.96 KiB) Viewed 1098 times

User avatar
Lakys
Site Admin
Site Admin
Posts: 5189
Joined: Sun Dec 12, 2004 3:30 am
Contact:

Improving hair renders - Speculars

Post by Lakys » Sun Feb 08, 2009 10:27 pm

We arrive to the most important stage, speculars, which are reflects and highlights.

And why do it that late and not before? Just because bump and displacement mappings may change all. Depending on it, we shall need to readjust glossiness, specular strength, etc.

Which shader (lighting model) to use? The metallic one. It is respectful of the texture and would not wash it out.

Which color? We need to introduce white hightlights. It is uneasy, as the speculars result (in this case) of the product of both diffuse and specular channels. Using Cyan/Blue seems appropriate considering the texture color.

Specular strength depends on the diffuse texture brightness, specular color saturation, and more. So if you have bright hair (blond), you will need a lower value than with some darker hair (brown, black) where you may need 100% or more.

The result with speculars. That's the first final render:
Attachments
juni05-specular.jpg
juni05-specular.jpg (359.46 KiB) Viewed 1094 times

User avatar
Lakys
Site Admin
Site Admin
Posts: 5189
Joined: Sun Dec 12, 2004 3:30 am
Contact:

Improving hair renders - Colors

Post by Lakys » Sun Feb 08, 2009 10:29 pm

Tweaking the different colors (ambient, diffuse and specular), you can create lots of shades.
Attachments
juni06-color-adjusting.jpg
juni06-color-adjusting.jpg (344.42 KiB) Viewed 1087 times

User avatar
Lakys
Site Admin
Site Admin
Posts: 5189
Joined: Sun Dec 12, 2004 3:30 am
Contact:

Improving hair renders - Exageration

Post by Lakys » Sun Feb 08, 2009 10:32 pm

Still using the very same textures, we can get a shiny effect which can also look like sequin.

Overall color has been adjusted to make it a red hair.
Attachments
juni07-color-exagerating.jpg
juni07-color-exagerating.jpg (379.82 KiB) Viewed 1087 times

User avatar
Lakys
Site Admin
Site Admin
Posts: 5189
Joined: Sun Dec 12, 2004 3:30 am
Contact:

Improving hair renders - Insane

Post by Lakys » Sun Feb 08, 2009 10:34 pm

And if you are looking for a unique look, funky, insane, sci-fi, or different, this last version is for you.

Still using the same textures. Colors and specular tweaked.
Attachments
juni08-insane.jpg
juni08-insane.jpg (394.67 KiB) Viewed 1080 times

User avatar
Lakys
Site Admin
Site Admin
Posts: 5189
Joined: Sun Dec 12, 2004 3:30 am
Contact:

Presets are available and can be downloaded

Post by Lakys » Sun Feb 08, 2009 10:37 pm

I have added in the Goodies the last four Material Presets used for renders.

DAZ Studio Hair Dresser FX for Juni Hair

Enjoy ;)

User avatar
heatherlee
Apprentice
Apprentice
Posts: 26
Joined: Mon Jan 02, 2006 7:13 pm

Post by heatherlee » Wed Feb 11, 2009 3:47 am

Wow, these are superb, and the techniques seem easy to follow. Will give this a try later this week. Thank you.

User avatar
Lakys
Site Admin
Site Admin
Posts: 5189
Joined: Sun Dec 12, 2004 3:30 am
Contact:

Post by Lakys » Wed Feb 11, 2009 9:44 am

heatherlee wrote:Wow, these are superb, and the techniques seem easy to follow.
Indeed.

And if you need help your some other hair, feel free to ask.
Will give this a try later this week. Thank you.
You're most welcome :)

User avatar
jammixx
Apprentice
Apprentice
Posts: 33
Joined: Mon Mar 15, 2010 9:47 pm
Location: Seattle, Washington, USA

Post by jammixx » Fri Mar 19, 2010 9:15 pm

This is wonderful! I've been complaining about the D/S hair appearance for a while now. The hair renders I get are definitely not what the example hair photo shows. Your tutorial gives me hope about doing it yet.

User avatar
Lakys
Site Admin
Site Admin
Posts: 5189
Joined: Sun Dec 12, 2004 3:30 am
Contact:

Post by Lakys » Fri Mar 19, 2010 10:19 pm

jammixx wrote:This is wonderful! I've been complaining about the D/S hair appearance for a while now. The hair renders I get are definitely not what the example hair photo shows. Your tutorial gives me hope about doing it yet.
That's one way to improve hair renders among some others. Feel free to ask for your own case. Things go completely different depending of the quality of the textures.

Post Reply

Return to “DAZ Studio”

Who is online

Users browsing this forum: No registered users and 1 guest