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Add HDRi as bakcground image (English)

Tutorials
Render Final de Imagen de fondo

Please all full or partial copies of this tutorial on other websites, digital or printed form without permission is prohibited. You can put a direct link to this webedes poner un enlace que dirija a esta web

If we use a HDRi as background image must be of good quality (good resolution in pixels) and put the camera in the correct position for the models that are in the scene look as if they really were on the floor.
The steps are:

1. Load the HDRi in a slot

Create a map VRayHDRi

HDRi as bakcground

Load at him HDRi high resolution

Carga en él el HDRi de alta resolución
Change the map type to Spherical

Cambia el tipo de mapa a Spherical

2. VRayHDRI in Environment Map

Drag VRayHDRI to the Environment Map

VRayHDRi en Environment Map

3. Camera Location

Create VRayPhysicalCamera on the scene and put in the coordinates 0, 0, 0

Ubicación de la Cámara

4. Display the HDRi in Viewport

If you like this post and want to continue reading the other steps of the tutorial, please click on one of the buttons of social networks (facebook, twitter or google+) to show hidden content:

Thank you 🙂

At the Viewport menu, go to Viewport Background > Background Environment, will be displayed in the viewport the image of HDRi

Visualizar el HDRi en el Viewport

View from VRayPhysicalCamera

Visualiza desde la VRayPhysicalCamera

Please note that from now to change the angle of vision so you just move the VRayCamera.Target, the camera must always be in X: 0cm, Y: 0cm and Z: 120cm.

5. Proper camera position

Creates models on the scene

Correcta posición de la cámara

Select the camera and change its position Z to 122cms. This measurement is the exact position of the SLR camera from which the photos were taken to create the HDR.

Selecciona la cámara y cambia su posición Z

6. Flooring and lighting LightDome

I added a LightDome on the scene and has the same texture as the HDRi Environment.

Suelo y iluminación LightDome

I also added a flat floor, and put the following material is to only see the shadows of the models.

un plano que hace de suelo

7. Final Render

The correct location of the models on the floor looks.

Render Final de Imagen de fondo

If you have any questions please leave a comment
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9 septiembre, 2014/1 Comentario/por Giancr
https://giancr.com/wp-content/uploads/2014/09/hdri_image_background_12.jpg 600 800 Giancr https://giancr.com/wp-content/uploads/2021/05/logo-Giancr.png Giancr2014-09-09 13:55:572021-09-07 18:12:31Add HDRi as bakcground image (English)

How illuminate HDRi «Light dome» in 3ds max and VRay? (English)

Tutorials, Uncategorized
tutorial de iluminacion hdri lightdome en 3ds max y vray ejemplo 01

Please all full or partial copies of this tutorial on other websites, digital or printed form without permission is prohibited. You can put a direct link to this webedes poner un enlace que dirija a esta web

Llévate este tutorial a tu dispositivo móvil - escanea este código QR

Take this tutorial to your mobile device – scan this QR code

For this tutorial you need basic knowledge of creating geometries

We saw in the HDRi Lighting Tutorial «Environment» in 3ds max with VRay as HDR post in a scene using the Environment, but now with VRay version 2 will explain how to do it with the Light dome.

1.- Prepare the Scenea

As I have said in other tutorials just need to put in the scene geometry and serve as a ground plane to see the shadows cast by the HDR

Prepare the scene
or better if you download the scene that I have prepared for this tutorial.

The downloads you need are the following:

  • A HDRi (free download of a HDRi)
  • A scene or optional download scene

Once you create your own scene or if you have downloaded open it with 3ds max.

2.- Loads the rendering engine: V-Ray

Open the Render Setup (F10 or Rendering > Render Setup…) window on the Common tab and assign it as the VRay rendering engine.

Render setup VRay

3.- Prepare the Indirect Illumination GI and Frame Buffer

In the same window the previous step, go to Indirect illumination and activates the On and choose as Primary bounces: Irradiance map and Secondary bounces: Brute force.

VRay - Iluminación Indirecta GI
From the VRay tab activates the frame buffer, the frame buffer is not essential but if you activate it helps activate and deactivate the Gamma 2.2 render mode.

VRay - Frame buffer

4.- Light creates the dome on the scene

If you like this post and want to continue reading the other steps of the tutorial, please click on one of the buttons of social networks (facebook, twitter or google+) to show hidden content:


6 junio, 2014/1 Comentario/por Giancr
https://giancr.com/wp-content/uploads/2014/06/tutorial-de-iluminacion-hdri-lightdome-en-3ds-max-y-vray-ejemplo-01.jpg 564 772 Giancr https://giancr.com/wp-content/uploads/2021/05/logo-Giancr.png Giancr2014-06-06 10:37:212021-09-07 18:14:41How illuminate HDRi «Light dome» in 3ds max and VRay? (English)

How illuminate HDRi «Environment» in 3ds max and VRay? (English)

Tutorials, Uncategorized

For this tutorial you need basic knowledge of geometry creation and editing materials.

illuminate HDRi "Environment"

Please all full or partial copies of this tutorial on other websites, digital or printed form without permission is prohibited. You can put a direct link to this webedes poner un enlace que dirija a esta web

1.- Preparing the scene

Welcome to this new tutorial that will explain how to use a HDRi for lighting a scene with 3dmax and VRay.
The basic objects for this tutorial is to create a plan that serves as ground and on it any geometry:

Preparing the scene

but if you want more details on the scene I have prepared one with more geometry (as shown on the picture onset), just download it, unzip the rar and open it in 3ds max.

Download scene

The downloads you need are:

  • A HDRi (HDRi download free)
  • A simple scene or download scene for this tutorial

2.- Loads the rendering engine: Vray

Open the Render Setup (F10 or Rendering > Render Setup…) window in the common tab and assign it as the VRay rendering engine.

We assign the render engine: Vray

3.- Prepare the Indirect Illumination GI

In Indirect illumination activates the On and choose as Primary bounces: the Irradiance Map and Secondary bounces: the Light cache

Prepare the Indirect Illumination GI

4.- Turn the room lights

If you like this post and want to continue reading the other steps of the tutorial, please click on one of the buttons of social networks (facebook, twitter or google+) to show hidden content:


4 junio, 2014/0 Comentarios/por Giancr
https://giancr.com/wp-content/uploads/2014/06/tutorial-hdri-vray-environment.jpg 750 1200 Giancr https://giancr.com/wp-content/uploads/2021/05/logo-Giancr.png Giancr2014-06-04 08:41:572021-09-07 18:15:03How illuminate HDRi «Environment» in 3ds max and VRay? (English)

What is HDRi? and What is LDRI? concept and differences (English)

Tutorials
Portada que es HDRi

Please all full or partial copies of this tutorial on other websites, digital or printed form without permission is prohibited. You can put a direct link to this webedes poner un enlace que dirija a esta web

What is LDRI?

Before you know what is a HDRi, I will say that is a LDRI. It’s nothing more than any image we can see on the internet or photos that we have done with a conventional camera and is called Low Dimanic Range image (LDRI or just LDR: low dynamic range) that contains minimal information of light and shadow it is necessary to represent our photo.
A LDRI file is used in websites, slideshows, TV, print, etc., it can be .jgp, .png, .tiff, .bmp, .gif, format, etc..
I will show you an example with the following image:

Underexposure and Overexposure

I have taken a picture and see how the object is closer clearly shows, however what is behind this too bright without coming to appreciate what is good.
I will try to fix this in the next picture:

Underexposure and Overexposure

Now with the same camera I made another picture trying to make the background look good, as in the previous photo was brightly lit, as shown, what is behind the window looks good but our object is closer this very dark.
That area of the first image that is too bright in photographic terms is said to Overexposed, the area of the second photo that is too dark is that it is Underexposed, photos of both the place that looks good is said to properly Exposed
These two photos above lack of light information to look good, the first picture is missing information shadows, the second photo lacks lighting information, so images are low-level information (low dynamic range).
But …. and if we take the two photos only part that looks good and put them together? that’s where HDRi comes in.

So what is Hdri?

As I showed above what is LDRI, the High Dynamic Range image (HDRi) is the opposite, that means it is an image that contai1ns information stored both lights and shadows which is able to capture with a camera photos.
This range is captured with a camera shown in «Steps» and is represented by the acronym EV.
A HDR or HDRi file is the same and usually carries a .hdr or .exr some may be also .raw, .tiff and others.
At present the HDR as such can not be displayed by any monitor, TV screen, or any device that projects images since even these lack the technology to display all the information of a hdr.

Knowing a little about photography

I’ll explain a bit more about photography oriented for HDR imaging. If you’ve ever had a professional or semi-professional camera in your hands you will have seen that there is a photo to the automatic option and the manual option. With the automatic option the camera chooses his values apparently lighting should have our picture and make photo, but this option is not worth to make a HDR. The best way is to take the HDR with the manual option, because with that you can control the EV steps ie can take a series of consecutive shots to capture lighting and shadows.
In photography there is the exposure time (shutter speed) which is nothing but having the control to overexpose, expose correctly or underexpose an image.
If you look behind the viewfinder of a professional camera or semi-professional camera you’ll see something like this:

Camera viewfinder

Camera viewfinder

Among many things, seen in the bottom left a number which in this case is 200 (1/200), this value indicates the exposure time will take your photo, this value you can manually increase or decrease to overexpose or underexpose as you see fit.
Below you’ll see a chart that normally have exposure cameras:

Table shutter speed

Table shutter speed

This table can vary from one camera to another, but in general each value is an exposure time and jump from one value to another contiguous counts as «step» or 1 EV (1/60 to 1/125 is a step or 1 EV and 2 to 4 is a step or 1 EV, etc etc) so we have 1/15 to 8 are 8 EV’s. We can say that there are intermediate values between one step and another, as shown in the photo above the 200 would be a middle of the 125 and 250. Therefore to create a HDRi you need to do a sequence of several shots with different exposure times and then join them into one and get a high dynamic range.

In the tutorial parameters and camera settings I explain more about shutter speed, aperture, distance, focal length, ISO, depth of field, and many tips.

How many Ev’s need to create a Hdri?

If you like this post and want to keep reading the rest of the content, please click on one of the buttons of social networks (facebook, twitter or google+) to show hidden content:


1 enero, 2014/1 Comentario/por Giancr
https://giancr.com/wp-content/uploads/2014/01/portada_que_es_hdri.jpg 393 748 Giancr https://giancr.com/wp-content/uploads/2021/05/logo-Giancr.png Giancr2014-01-01 07:30:422021-09-07 18:16:22What is HDRi? and What is LDRI? concept and differences (English)

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