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Forums >> Revit Building >> Technical Support >> Faded appearance in renders

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Tue, Sep 9, 2008 at 11:07:01 PM | Faded appearance in renders

#1

azcop


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Hi

I've been using Revit for a few years now but am only just starting to explore the render features of the program.

One thing I have noticed is that ALL my renders appear lighter than they should. If I were to nominate a dark grey colour for my sheet metal roofing (colorbond) for example it ALWAYS appears a very light grey. If I use black it may turn out the desired grey. If I were to pick a brown coloured brick for example it'll most likely appear cream or at the best a very light coloured brown. I have colour swatches for our roofing, brickwork, etc. that I import into our projects for these renders and once this little issue is nutted out I'll be in happy-land.

What setting or tweak do I need to change/make in order for my renders to represent correctly.

This seems to happen no matter what "Sun and Shadows Settings" I nominate, no matter what Render Quality Setting I use or what materials I use. 

Any help would be greatly appreciated.

Many thanks,

Stefan

It really has me buggared.


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Tue, Sep 9, 2008 at 11:16:39 PM | Faded appearance in renders

#2

alabaster2513


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Sounds like you could look into 2 different areas:

1. Exposure Values

2. Gamma settings for your monitor

I know adobe has a program that adjusts your Gamma.

Post an image of your renders so we can check it out.


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Tue, Sep 9, 2008 at 11:43:35 PM | Faded appearance in renders

#3

azcop


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Gamma you???

I've heard something about it but don't really know much on it.

THANKS A MILLION BUDDY!!!! I'LL DEFINITELY INVESTIGATE FURTHER ON IT!!!!

I've attached two images. One was done with the Render Quality Setting "Best" and the other with a customised Setting where I increased the "Refractions" and "Indirect Illumination Options". Am unsure of the materials used on these renders but am pretty certain alternative materials were used. At some stage today I will be ready to generate another render whereas I will use the wanted material swatches. I can then post the swatches used and the resulting render where you'll be able to spot the difference.

As mentioned I am somewhat of a virgin when it comes to renders and only yesterday started exploring RPC's and the benifits they provide.

Many thanks mate. YOU'RE A LEGEND!!! I WILL SPEAK TO THE POWERS TO BE AND HAVE 64 VIRGINS DELIVERED TO YOUR DOOR IN APPRECIATION (is that legal).



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44447_Bentley_Render_03.jpg44447_Bentley_RenderRPC_01.jpg

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Tue, Sep 9, 2008 at 11:44:23 PM | Faded appearance in renders

#4

azcop


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That was meant to say

"GAMMA YOU SAY???"


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Wed, Sep 10, 2008 at 1:36:13 AM | Faded appearance in renders

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psymon


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Sorry, which render is which? The lighter one is the one with the custom settings?

 


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Wed, Sep 10, 2008 at 2:32:54 AM | Faded appearance in renders

#6

azcop


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Hi mate. 

The darker one has the custom settings. The lighter of the two is what results when I use "Render Quality Setting" set to "Best". Wasn't happy with the way it presented so I had a quick play with customising refractions, etc. I'm all new to this so at this stage it's all experimenting.

Still not happy with it. The render attached is one I did last week. We ended up using something (much to my disgust) but I've got a few more I'm working on now. Gonna change some settings and let it render over night and see what the result is in the morning.

Hopefully with a bit of luck it looks at least half presentable.

If you have any suggestions by all means throw them my way (any help I can get is very gladly accepted).

Thanks mate,

Stefan


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Wed, Sep 10, 2008 at 2:47:38 AM | Faded appearance in renders

#7

psymon


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As you might have guessed, rendering is quite complex and mental ray especially, can sometimes represent the world too acurately.

Some things that happen:

The colour of the light emitted by the sun changes depending on the time of the day :it is bluer at midday (from the sun and  sometimes goes golden and darker as it get to be late afternoon.) This in turn changes the colours of the objects it is casting light on.

Have you mucked around with the "adjust exposure" tab on the rendering dialouge box. Use this after the render has finished, you can change the light colur (white point), illumination etc...... make a small incremental change then press apply.

see how you go, and come back with your results.


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Wed, Sep 10, 2008 at 3:08:00 AM | Faded appearance in renders

#8

azcop


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Thanks for the tips Psymon.

I have played with date/time settings and had noticed the difference but unfortunately this of course changes my overshadowing. Guess I could always save the file with a render extension and change the orientation for rendering purposes.

It is a nifty little way though I do admit to change the appearance of the objects.

Have only had a very brief play with the "adjust exposure"  feature so maybe a little more time invested there will prove fruitful.

I'm guessing only very minor adjustments are required.

NO WORRIES MATE! Will do a render overnight and have a play with said settings in the morning.

THANKS A MILLION DUDE!

LEGEND!!!

 


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