Author Topic: I need help about render brightness  (Read 2694 times)

2019-12-29, 15:19:19

tlgalp

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hello everyone, after using vray i want to learn about corona and started today. I have a problem with brightness for my renders. I am copying all of the lighting values and intensity parameters etc. from a video tutorial but there are many differences between these two results. Is it about gamma/lut settings? I also check them but i cant see anything weird.

2019-12-30, 02:43:44
Reply #1

Andrejee

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hello everyone, after using vray i want to learn about corona and started today. I have a problem with brightness for my renders. I am copying all of the lighting values and intensity parameters etc. from a video tutorial but there are many differences between these two results. Is it about gamma/lut settings? I also check them but i cant see anything weird.
Hi, newbie here, too, but have you tried to put the exposure to minus?

2019-12-30, 12:33:58
Reply #2

tlgalp

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hello everyone, after using vray i want to learn about corona and started today. I have a problem with brightness for my renders. I am copying all of the lighting values and intensity parameters etc. from a video tutorial but there are many differences between these two results. Is it about gamma/lut settings? I also check them but i cant see anything weird.
Hi, newbie here, too, but have you tried to put the exposure to minus?

Yes i tried, but it didn't have much effect and also render didn't appear realistic.  I wonder why these renders have so much difference, even though I use the same light values ​​and the same camera settings.

2019-12-30, 13:57:55
Reply #3

maru

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What exact video tutorial are you using?
Are you 100% sure that all values are the same?
- materials and their brightness
- environment lighting intensity
- sun/other lights' intensity
- reflectivity and other properties of materials
- scene exposure (it could be specified either in the VFB or in the current camera's settings)
Marcin Miodek | chaos-corona.com
3D Support Team Lead - Corona | contact us

2019-12-30, 15:30:43
Reply #4

sprayer

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I do not recommend to watch this video with highlight compress 500.
On youtube corona channel have great tutorials for all what you need

2019-12-30, 19:23:26
Reply #5

tlgalp

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What exact video tutorial are you using?
Are you 100% sure that all values are the same?
- materials and their brightness
- environment lighting intensity
- sun/other lights' intensity
- reflectivity and other properties of materials
- scene exposure (it could be specified either in the VFB or in the current camera's settings)

Hi Maru, yes all of materials (because they are all materials from corona material library), sun light intensity, enviroment etc. are same values. I am adding another render examples from my other scene. First one, top light intensity 50 others both 15. Second one, top light intensity 5 others both 2. I am also adding my camera settings, two of renders have very bad brightness and color.

2020-01-02, 09:11:29
Reply #6

GeorgeK

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hello everyone, after using vray i want to learn about corona and started today. I have a problem with brightness for my renders. I am copying all of the lighting values and intensity parameters etc. from a video tutorial but there are many differences between these two results. Is it about gamma/lut settings? I also check them but i cant see anything weird.

The tutorial's wood floor material seems to have ambient occlusion applied, the same probably for the walls. Can you please double check that's the case, and if so make sure your unit setup is correctly set to that of your tutors.

Also be weary of automatic exposure control in 3ds max settings.

George Karampelas | chaos-corona.com
Chaos Corona QA Specialist | contact us

2020-01-03, 16:37:21
Reply #7

maru

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I am adding another render examples from my other scene. First one, top light intensity 50 others both 15. Second one, top light intensity 5 others both 2. I am also adding my camera settings, two of renders have very bad brightness and color.
Ok, but what is the problem? Badly lit scene with wrong exposure will always render badly. Can you explain what exactly you would like to achieve, and what issue you are facing?

Also be weary of automatic exposure control in 3ds max settings.
But these settings are ignored by Corona, right?
Marcin Miodek | chaos-corona.com
3D Support Team Lead - Corona | contact us

2020-01-06, 14:25:58
Reply #8

GeorgeK

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Quote
But these settings are ignored by Corona, right?

Ugh my bad, I was remembering the Vray one ^^, thankfully yeah corona it does ignore it.
« Last Edit: 2020-01-06, 14:31:39 by GKS »
George Karampelas | chaos-corona.com
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