Deviant Login Shop
 Join deviantART for FREE Take the Tour
About Varied / Artist Premium Member linvanoakMale/Switzerland Recent Activity
Deviant for 3 Years
7 Month Premium Membership
Statistics 216 Deviations 50 Comments 1,882 Pageviews

Newest Deviations

deviantID

linvanoak's Profile Picture
linvanoak

Artist | Varied
Switzerland
I enjoy creating images with various tools and software.

Equipment used:

Sony NEX and ILCE cameras
Sony Alpha and E-mount lenses

Software used:

Adobe Creative Cloud Applications
DAZ Studio Pro
E-on Vue Infinite
Otoy Octane Render
Pixologic Zbrush
Sony Vegas Pro
Video Copilot Elements 3D


You can find the latest updates on:
How do you set camera values like F-Stop, Focal Lenght and Focus in the OctaneRender Plugin for DAZ Studio?

Many ways lead to the same goal.
You can use the DAZ camera tab to select Depth of Field.

OR

I find the most conveniant and quickest way is to:


Set Focus, F-stop and Focal Lenght in the OctaneRender plugin viewport.

In the upper right corner of the OCDS plugin viewport you find a small camera icon.
If you hoover over it the tool tip "Edit selected camera paramters" appears.

- The 5th icon from the left will let you to "Set camera focus to scene objects"
Just click on the item you want to have in focus in the OCDS once the mouse pointer transformed into a cross "+"

- With the plugin viewport still open you can now also change the F-stop value to adjust the Depth of Field.

The OCDS plugin F-stop values behave very close to real cameras.
F 1.4 will lead to a very blurred background.
F 22 will lead to a very sharp background.


Focus selection tool - F Stop at 1.4 by linvanoak

Focal Lenght 35mm - Camera Position C
F 1.4


- - -


Focus selection tool - F Stop at 22 by linvanoak

Focal Lenght 35mm - Camera Position C
F 22

- - -

Please notice that as in real life depth of field will also depend on your Focal Lenght.

Example:

F 5.6 and Focal Lenght of 85.

With a Focal Length of 85 that is useful for portrait situation and F Stop at 5.6 the background will not be as blured as at F 1.4. Still the background will be reasonable unsharp to make the subject stand out.


Focus selection tool - F 1.4 Focal Lenght 85mm by linvanoak

Focal Lenght 85mm - Camera Position A
F stop at F1.4

- - -

Focus selection tool - F 5.6 Focal Lenght 85mm by linvanoak

Focal Lenght 85mm - Camera Position A
F stop at F5.6

- - -

F 5.6 and Focal Lenght of 35
With a Focal Lenght of 35 that is useful for capturing landscapes or any larger scenes and F stop at 5.6 you will notice that the background is barely blured.

Focus selection tool - F 5.6 Focal Lenght 35mm by linvanoak

Focal Lenght 35mm - Camera Position B
F stop at F5.6

- - -

To put it different:

The more you zoom in the more blurred the background will become while keeping the F stop at the same value.


- - -

Additional things to notice:
When working in the DS Camera Tab make sure only to use settings under Camera/OctaneRender
Other Camera values in the DS Camera tab may not have any influence on the OCDS plugin viewport.

- - -

Scene used to create images: The Streets of Asia 2 by Stonemason.

Notice for maximum image quality you should the render engine run until at least 1000 Samples per pixel are calculated. For the sake of the tutorial I captured the screenshots while the renders were still in progress.

- - -
- - -

BTW:

For those who wonder how the same scene looks before it was rendered:

DS Open GL viewport - Texture Shaded by linvanoak

DAZ Studio - OpenGL viewport - Texture Shaded

- - -

DS Open GL viewport - Wireframe by linvanoak

DAZ Studio - OpenGL viewport - Wireframe


I think photographers are the last people to use 3d software.

On first glance it may look this way but the longer you experiment with both photography and computer graphics you will realize that many techniques can be quite similar.

As photographer you allready have a huge advantage knowing in what situation to use which type of lenses, focal lenght, F-stop, exposure, iso values etc.


I am wondering if there are any other product or studio types here that might have some pointers on using Octane in the "virtual studio" type of use?

You can adapt many different real life lighting techniques to light your 3D scene.

In photography do you prefer the glamour look that is achieved by using multiple flash lights?

Then simulate that look in OctaneRender by using light emitters on surfaces and set them to blackbody emission.

- - -

Do you prefer a natural light situation and are used to working with reflectors in real life?

Then use planes or circle like basic geometry shapes with a white, gold or silver surface material that will as well reflect any light rays back on the subject.

- - -

If the shape of reflections in the eye matters to you try to use the same shape as in real life for light sources.

In computer graphics it is so much easier to create a ring light that even shows up in the eye reflections of a CG model.

- - -

For example, what are some tips to create physically accurate soft boxes?

Soft boxes are a bit tricky. In theory you can create any 3D object in zbrush or any other modeling application of your choice. But then especially for soft boxes your render times may take a hit if the light rays have to travel trough the soft box material and then on your subject.
And you may see more noise if your main light source does not light your main subject directly but through another volume.

- - -

So this is the moment when we start to ask:

Do we really want realistic lighting or do we want to fake it?

Especially for portraits I find you get far more pleasing results by using the HDR environment to light your scene.
And as a photographer you get the advantage that you may even have quite a lot of your own photographs that you can use as HDR light source with some adjustments...

- - -

You will find the same dilemma with the new daylight environment. If you want to render landscapes you will be happy with the harsh shadows sunlight produces.

But if you want to render human CG models then you may want to place your 3D-models in the shade or below a diffuser like in real life.

In this situation as well it may be so much easier to rather use the HDR environment and "faking" the soft shadows.


What are the best steps to creating physically accurate materials? 

The first step may be to have a look at the OctaneRender live database and see what kind of materials are there allready.

As a starter have a look how water and glass materials are created.
Then you will notice that there are allready a lot of real life physical properties included in the OctaneRender material settings.

- - -

Just some things to also keep in mind:

You will find that unfortunately not all render engine settings that have photography terms are working exactly like in real life and may be more simplified.

For example you may find F-stop values in the imager and in the camera settings.

But those two are not linked even though they are named exactly the same. So you can use the F-stop values in the imager to give the whole scene a different look. Instead of blue skies it will turn white like in real life when you open the aperture.

At the same time you can set a completly different F-stop value in the camera settings that will have no influence on the light situation at all. The only difference the camera F-stop value has is the depth of field.



- - -

I stop it here. Guess this is some information to get you started.

- - -

This forum post was originally created as answer on the OctaneRender forum. Since I often get asked about this topic I deceided to share this with you as well.

Linvanoak The Fountain On The Path Not Taken by linvanoak


Groups

Comments


Add a Comment:
 
:iconarkeoklept:
arkeoklept Featured By Owner Jun 28, 2014  Hobbyist Digital Artist
Thank you for the watch, my friend. I look forward to seeing more of your work!
Reply
:iconflamingodancer123:
flamingodancer123 Featured By Owner Mar 13, 2014
Thanks for joining :iconlotr-hobbit-club: and a very warm welcome!!!:)
Reply
:icongwasanee:
Gwasanee Featured By Owner Dec 24, 2013  Hobbyist Digital Artist

MistletoeThank you for your pleasant comments and your kind support this year! I am very happy to be a part of such a great community. I wish you and your family with all my heart a peaceful and merry christmas and a happy new year!

Take care and be always creative,
Gwas 

Reply
:iconchaotickizmit:
ChaoticKizmit Featured By Owner Dec 23, 2013  Hobbyist Digital Artist
Thanks for the :+devwatch:
Reply
:icontunareborn:
TunaReborn Featured By Owner Dec 19, 2013  Hobbyist Digital Artist
Thanks for the Watch!
Reply
:iconradthorne:
Radthorne Featured By Owner Nov 25, 2013
Thanks for the :gallery: watch!
Reply
:iconsix-kings:
Six-Kings Featured By Owner Nov 21, 2013  Hobbyist Digital Artist
Thanks for adding "Sydney Bulber House" to your favs! :) (Smile)
Reply
:iconminaya86:
Minaya86 Featured By Owner Nov 21, 2013  Professional Digital Artist
Thanks for the warch and the fave.
Reply
:icongwasanee:
Gwasanee Featured By Owner Nov 21, 2013  Hobbyist Digital Artist
Many thanks for the watch. I'm very glad you like my work and I appreciate your support :heart:
Reply
:iconumbatman:
umbatman Featured By Owner Nov 21, 2013  Professional General Artist
thank you for the watch, though i think its at a bad time as i am not ging to upload any stuff soon and im retired
Reply
Add a Comment: