Revit Architecture Forum
Welcome to Autodesk’s Revit Architecture Forums. Share your knowledge, ask questions, and explore popular Revit Architecture topics.
abbrechen
Suchergebnisse werden angezeigt für 
Anzeigen  nur  | Stattdessen suchen nach 
Meintest du: 

Render - exposure

4 ANTWORTEN 4
GELÖST
Antworten
Nachricht 1 von 5
mishkt
2502 Aufrufe, 4 Antworten

Render - exposure

Hello,

I want to create exterior render with interior lights. 

So when i go to adjust exposer and change exposure value it looks like the sun is getting brighter instead of the interior lights. But I need to make interior lights brighter.

 

What can I do to edit my interior lights after rendering?

4 ANTWORTEN 4
Nachricht 2 von 5
ToanDN
als Antwort auf: mishkt

Doing an exterior rendering with interior lights is always tricky because the Sun overpowers the lights.  In Revit you can't quite control the intensity of the Sun except for changing the time, changing geographical location, or adding clouds, so you need to increase the interior lights quite dramatically.

 

However, a rendering with the exterior and interior equally bright is just unrealistic and can have a negative impact aesthetically.  Just like you look at a photo of a building in brad daylight, if the inside is well lit then you should know that it's photochopped.

Nachricht 3 von 5
mishkt
als Antwort auf: ToanDN

Thank you for answer.

But why in this video (https://www.youtube.com/watch?v=kK8zwKgZs3k) it's possible to change intensity of interior lights?

Nachricht 4 von 5
loboarch
als Antwort auf: mishkt

To get a render to have artificial and sunlight in the same image, it can be pretty hard to get that, because you are either over exposing to try and capture the much dimmer (by comparison) interior lights, or underexposing to try and compensate for the sunlight. You need a HDR (high dynamic range) image. Revit does not really allow you to create this kind of image easily.

 

One strategy you can use is to render 2 images at 2 different exposures from the exact same position and time of day. Then take the 2 images and Photoshop them together.

 

Combined.png

 

This image was done this way. It was done real quick so it could probably be a lot better if I spent more than 10 minutes messing with it. Here I have 2 images, one with the lights is set as a background layer in Photoshop and then the other image is laid over the top and I simply "cut holes" through it where the windows are on the building.

 

Here are the 2 source images I used. 

 

From Yard_artificial.jpgFrom Yard_sunset.jpg



Jeff Hanson
Principal Content Experience Designer
Revit Help |
Nachricht 5 von 5
ToanDN
als Antwort auf: mishkt

With Revit 2015 I can't get quite close to what he did in the video.  But they changed the rendering engine, and subsequently, the exposure adjustments in Revit 2017, so it does not work the same as 2015.  My guess is that you need to bump up the Interior light wattage quite dramatically.

 

Last resort might be using PhotoShop like @loboarch has demonstrated.  There are options to play with highlight, shadow, mid-tone, as well as various ways to layering multiple images of different exposures to get the desired final rendering.

Sie finden nicht, was Sie suchen? Fragen Sie die Community oder teilen Sie Ihr Wissen mit anderen.

In Foren veröffentlichen  

Autodesk Design & Make Report