Netherlands
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Re: light fix
It would help if you made it clear what you want fixed.
If the light is too bright/powerfull you can modify the light model. In the bottom right corner there is a setting "Light power (%)" that is default set to 50%. You can change that number to get more or less light power when rendering a photo.
If it is the spread of the light then you need either a different light or add a invisible lightpanel or hemisphere. Read this very educational thread from GaudiGalopin about using invisible hemispheres to light a scene. Unfortunately all images are lost because the file host disappeared but you can still learn a lot from the text.
PS Please remove your double post, the one without replies.
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last edit by Keet at Sep 1, 2025, 12:01:59 PM]
Russia
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Re: light fix
Hi. And thanks Keet! I see that first you need to understand that the program has 1. an easy way to make lighting in any room, this method is primitive in essence. All other methods are independent lighting inside and outside the house or room, this method requires attention to the light sources, their power and color. This method of lighting is the most effective if done correctly and with fiction. So the easiest way is the "add ceiling lights" button, I see that this mode is enabled. I advise you to turn it off. And try a more interesting way with your own light sources. I recommend using hemispheres rather than spheres. These fixtures are available in the expanded library of fixtures. These lights can be of the right color and the right power. They can also be changed in shape and tilted to any position. These hemispheres work like searchlights, they shine inward and, accordingly, the light from them also spreads outward from the hemispheres. This does not make the shadows in the room from objects turn black, they become lighter and look like real transparent shadows, where reflected light from the walls and floor works. If the hemisphere has the shape of a tall tower, then the light mainly spreads out to the sides and slightly downwards. If the hemisphere has the shape of a flat plate, then it is a directed beam of light, mainly the stream of light is directed down into the floor. I have placed 8 such hemispherical towers in the room. The power of each tower is 1%, the base size is 1 meter, the tower height is 2.7 meters, the color is white. These towers can be placed evenly with small intersections, it is better not to touch the walls. Each tower should be raised 20-30cm above the floor level, the top of the tower should not touch the ceiling, 20-30cm from the ceiling.
The brightness level must first be set to the middle position and the desired brightness mode must be achieved on trial renderers. The more light sources there are in the room, the lower the brightness mode of the render will be.
Russia
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Re: light fix
to the colored walls and colored floor, add 180-degree hemispherical plates pointing upward. The color is brown, the power is 5%. They work as reflected light from the floor, and objects receive a color reflex from the parquet. All white objects become more complex in color, it's always beautiful. Better than just shades of gray.
Croatia
Joined: Jan 15, 2025
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Re: light fix
A good way for ambient lighting. I use an even simpler way. I use two invisible light panels. I place one 0.5 cm from the ceiling and it is oriented towards the floor with a strength of about 2. I copy the same one and place it 0.5 cm from the floor and rotate it along the x or y axis so that it is directed towards the ceiling with a strength between 1 and 2. For those lights, I create a new level at the same elevation as the first level. So I can easily turn on and off those lights that only serve to illuminate the space.
Netherlands
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Re: light fix
A good way for ambient lighting. I use an even simpler way. I use two invisible light panels. I place one 0.5 cm from the ceiling and it is oriented towards the floor with a strength of about 2. I copy the same one and place it 0.5 cm from the floor and rotate it along the x or y axis so that it is directed towards the ceiling with a strength between 1 and 2. For those lights, I create a new level at the same elevation as the first level. So I can easily turn on and off those lights that only serve to illuminate the space.
A good alternative and much, much faster with rendering
The invisible hemispheres are very heavy with rendering because each hemisphere is basically a huge set of lights in one object: each face of the hemisphere acts like a separate light and requires separate light calculations. But they have a major advantage over an invisible light panel at the bottom: with hemispheres you can select exactly where you shine light. A single light panel at the bottom lights everything from below, including places where you naturally wouldn't see light.
It still is a good alternative for the hemispheres but I would use multiple panels spread so the lighting keeps looking natural. That also has the advantage that you can use different sizes panels that you can tilt and set the power for each individual panel. I think with a little experimenting that with panels you can achieve a result close to that with hemispheres although it might require quite a lot of panels. Too many and you loose the faster rendering advantage. Using separate levels for the panels allows you to create different configurations that you can select by making only one of the light levels visible. I haven't looked at it yet but that new level manager plugin might be very useful for this.
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Russia
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Re: light fix
Thanks MarioSambol! It's a very interesting way and really much faster. The panels have one big disadvantage - if the panel is close to the wall, it will give an undesirable border of light and shadow to the surface. I showed you an example of several colored panels in a room. All of them do not touch the walls, are located at different angles, and have different color.
I think the panels can be used locally and personally for small areas near objects to make a reflex in the right place, trying not to bring them close to walls and other objects. And of course you can make them the size of the whole room (floor and ceiling). I tried to make a simple interior for an example with only panels, and the second example is a combination of panels and hemispheres. For example, I illuminated the ceiling above the balls with a flat hemisphere to remove the effect of the light border on the walls. And he filled the whole room with weak hemispherical towers of different colors. I like using hemispheres because they are the best at making the light look like the real light in the room. But if you partially use panels (for example, all the balls below are highlighted with small brown panels of 5%), you can significantly reduce the time of a long render. The first picture is only with panels for 6 minutes, the second picture is a mix of hemispheres and panels for 34 minutes. The difference between these pictures is not very visible, but if you make the light more difficult, then it ends up being very similar to the truth, without spurious effects. You have to pay for everything with time, of course, but thanks again for the advice to use a faster light tool. A great way to speed up the process is to apply it in the right places in a dosed manner.
