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Problems with lighting
Posted: 28 October 2012 09:17 AM   [ Ignore ]
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Guys,

I’ve only just started with DAZ studio and I’m currently working on my first test scene, which is five figures on the Greek Rotunda from the DAZ shop.  My current problem is that I’m really struggling with lights and lighting.  I’m planning a series of scenes set in a cave, in the future, so getting the light levels right is crucial to what I want to achieve, Specifically, I need to be able to do two things:

1) Control the light levels, varying them from broad daylight to night.

2) Control the depth of shadows.

Number 1) is the most important.

I’ve tried the lighting presets bundled with Genesis 4.5 and I’ve also downloaded Serene Scene DS4, which boasts 8 sunset and 9 moonlit nights.  No matter how much I fiddle with the various parameters, however, I always seem to end up with broad daylight. when I do the render.

Needless to say, the manual that DAZ supply is no help at all on account of the fact that there isn’t one. I’m probably making a beginners mistake but, since I’m a beginner I can’t figure out what it is. Can anyone help?

Thanks,

Alex.

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Posted: 28 October 2012 09:51 AM   [ Ignore ]   [ # 1 ]
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- Does the prop come with a lightset?
- What are your rendersettings? Are you rendering with 3Delight or hardware?

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Posted: 28 October 2012 10:40 AM   [ Ignore ]   [ # 2 ]
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Thanks for the quick response.  This is the prop I’m using

http://www.daz3d.com/shop/greek-rotunda

There is a mention of poser lights on the web page but no mention of DAZ ones. I’ve just checked a clean version of the scene, from before I started adding light presets, and there’s no mention of any other lights in the drop down list of the major elements in the scene. All it lists are the five Genesis figures, two sets of hair and the rotunda base.  This strongly suggests that a conflict between two sets of lighting presets isn’t the problem

I’m using the standard 3delight rendering engine.

Thanks,

Alex.

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Posted: 28 October 2012 10:57 AM   [ Ignore ]   [ # 3 ]
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From where do you load the item? From Smart Content or from the Content Library browser?
Some items come preloaded with light, try the “Delete all Lights” menuy item under Edit->Delete

I don’t think I have that Item so I cannot test it.

 

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Posted: 28 October 2012 11:54 AM   [ Ignore ]   [ # 4 ]
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The “Delete all lights” option is greyed out. The only delete option that is available is “Delete selected item”.

I loaded the item from the content library browser on the right hand side of the screen.  I couldn’t find it on the smart content pane, on the left.

Thanks,

Alex.

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Posted: 28 October 2012 11:56 AM   [ Ignore ]   [ # 5 ]
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alexhcowley - 28 October 2012 11:54 AM

The “Delete all lights” option is greyed out. The only delete option that is available is “Delete selected item”.

I loaded the item from the content library browser on the right hand side of the screen.  I couldn’t find it on the smart content pane, on the left.

Thanks,

Alex.

OK, then no lights. Did you set materials on is “from Pose”, so you got DS materials? (I’m guessing but as I don’t have it I cant say where they are but the readme say where you can find DS mateirals. Poser materials sometimes renders VERY light.

 

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Posted: 28 October 2012 01:08 PM   [ Ignore ]   [ # 6 ]
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I think that the materials have come from Poser.  If you are right, how can I get them to render darker?

Thanks,

Alex.

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Posted: 28 October 2012 01:13 PM   [ Ignore ]   [ # 7 ]
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alexhcowley - 28 October 2012 01:08 PM

I think that the materials have come from Poser.  If you are right, how can I get them to render darker?

Thanks,

Alex.

Firstm look in the readme where the MAT Poses are, if there are in the [Posercontent]->Runtime->Pose or if there are DS Materials in for example [DSContent]->Props->Exterior or [DSContent]->Environment->Architectural , That way you will find materials correctly setup for DS. The product page suggests the DS materials are in the Pose together with the Poser mats. So look in the readme in what folder the Mat poses are,  and if the icons has a little script in the corner or is tagged material they are for DS.

Select a piece, apply material, repeat

 

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Posted: 01 November 2012 03:10 AM   [ Ignore ]   [ # 8 ]
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I’ve spent the last three evenings googling DAZ lights and reading up on the subject.  I’ve also been running a series of tests, as documented in the attached jpegs.

The Greek Rotunda read me has the following to say on the subject of mat settings: You will no longer need to go to a separate DAZ Studio folder to apply the DAZ Studio Material Presets. Simply apply the MAT Pose from the Poser Pose->Gordana->Greek_Rotunda directory.

the first jpeg shows a render done with the DAZ default, diffused lights.

The second set shows the material presets directory, the picture before the render and the results of the render.  This set was done with one of the light presets.

The last jpeg shows a new scene I did with the Alchemy Cavern scene that comes bundled with DAZ 4.5.  This is illuminated with a single custom light, again dialed right back, and has come out exactly how I expected.

Any further insights you can offer would be most appreciated.

Thanks,

Alex.

Image Attachments
Lights001.jpgLights002Material.jpgLights002PreRender.jpgLights002Render.jpgLights004SingleLight.jpg
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Posted: 01 November 2012 06:33 AM   [ Ignore ]   [ # 9 ]
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Your surfaces are ok for now.

Lighting: There is no one easy answer. We get this all the time and there is no way to condense 3 years, in my case, of experience in to a single forum post.

When I was starting out I used light presets and adjusted the Lights intensity myself

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Posted: 01 November 2012 01:37 PM   [ Ignore ]   [ # 10 ]
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Many thanks for the comments, to both of you.  I’ve just invested in a book from Amazon which purports to be the official guide to DAZ so I’m going to read that and then do lots of experimenting.  I have about two weeks or so experience with DAZ so I expect there will be a lot more trial and error in the future.

Thanks, again, guys,

Alex.

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Posted: 01 November 2012 01:49 PM   [ Ignore ]   [ # 11 ]
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I have to first edition of that book and for me, as a newcomer, I found it helpful. I also wrote this out recently http://www.daz3d.com/forums/viewthread/10835/ which may help with Learning CG in general.

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Posted: 01 November 2012 01:58 PM   [ Ignore ]   [ # 12 ]
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This Thread has loads of useful Tips on Lighting.
http://www.daz3d.com/forums/viewthread/1201/
Just read through it and see if it has any tips you can use.

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Posted: 01 November 2012 02:50 PM   [ Ignore ]   [ # 13 ]
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This just came in a mail and on FB from Dreamlight: http://basic3dtraining.com/best-kept-secret-to-great-3d-lighting/

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Posted: 10 November 2012 04:13 AM   [ Ignore ]   [ # 14 ]
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Thanks for all the helpful pointers, guys.  Having thought about it a little bit more, I suspect the problem may be the high reflectivity of marble.  Whoever created the Rotunda has possibly been a little too faithful in replicating this.

Cheers,

Alex.

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Posted: 10 November 2012 04:21 AM   [ Ignore ]   [ # 15 ]
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Well you can adjust the amount of reflection….are you sure it has reflection applied?

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