Ok, I’m gonna try something here. I get a bit of emails asking questions about SolidWorks and alot of them are really good questions that I’d love to turn into posts. So that’s what we’re gonna do.
First Person to Ask a Question
The first person to add a comment below that asks a question about SolidWorks will turn this post into a 100% grade-A tip for everyone to join in on. All I ask, is that it’s not a question like, why does SolidWorks suck or can monkeys use SolidWorks… this is serious stuff people.
So ask away, chime in if you know the answer, and we’ll see how this goes. If you like it, we can turn it into a regular type of thing on this here blog.
The Mystery Question Is…
UPDATE! Jeff (at 7:22 am CT) asks – “In Photoworks, do many people use both the depth of field and indirect illumination? I find the two don’t work together well- turning DOF on causes indirect illumination to make little difference. I know this isn’t the most exciting question, and maybe a better one will be sparked from this.”
Help him out in the comments!



SolidSmack is a very small behemoth of an online community about 3D CAD, technology, design, robots, and ninjas… Ok, maybe not ninjas so much, but those guys are COOL so there just might be something about some dang ninjas.
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In Photoworks, do many people use both the depth of field and indirect illumination? I find the two don’t work together well- turning DOF on causes indirect illumination to make little difference. I know this isn’t the most exciting question, and maybe a better one will be sparked from this.
I find that Photoworks doesn’t do a very good job with depth of field. Indirect illumination is one of the most important aspects of a good rendering, so make the rendering as good as possible without depth of field, then add it later (I think you can use photoshop).
Here is a rendering I did with Indirect Illumination and DOF. http://picasaweb.google.com/ksmason71/Rendering...
Here is a rendering I did with Indirect Illumination and DOF. http://picasaweb.google.com/ksmason71/RenderingsAndSuch/photo#5195040316349253826
OOps, I didn’t read the fine print, and now I have strayed off topic. Photoworks and DOF are greek to me, but it wouldn’t surprise me if it wasn’t as powerful or user friendly as a program made specifically for rendering.
You should be able to use indirect illumination and DOF together without issue. I agree with Kyle, “Indirect illumination is one of the most important aspects of a good rendering, so make the rendering as good as possible without depth of field, then add it later (I think you can use photoshop).”
I do sometimes have issues with DOF settings in PhotoWorks.
You should be able to use indirect illumination and DOF together without issue. I agree with Kyle, “Indirect illumination is one of the most important aspects of a good rendering, so make the rendering as good as possible without depth of field, then add it later (I think you can use photoshop).”
I do sometimes have issues with DOF settings in PhotoWorks.
Introduce Depth of Focus surely will affect the indirect illumination ( or to be more precisely, will darken your scene), this is very natural, as it needs to follow the theory of photographing.
Imaging you are using a camera, (PhotoWorks brand), when you need to define a focus point with certain area of DOF, how the PhotoWorks is going to achieve this effect? it will try to reduce the aperture or shutter speed—>both will result in lesser light to expose your PhotoWorks film, so, naturally, if you need more DOF effect (narrow down the DOF range) , your scene will become darker, and you have to compensate it manually. (increase no. of light bouncing , or increase the light source brightness)
Below is something I copy from Maxwell Render website. Just for your reference. I found out it’s quite useful for Photoworks users as well.
_____________________________________________________________________________
DOF Theory
When you focus on a centric element in your image, areas that are out of focus typically become unsharp. This phenomenon is called Depth of Field (DOF).
DOF Practice
The DOF amount depends on the fstop (An important notion in optics, fstop expresses the diameter of the entrance pupil in terms of the effective focal length of the lens. fstop is the quantitative measure of lens speed in photography. The smaller the fstop, the smaller the DOF, meaning only a small area of the image will be in focus.) value and the lens diameter, so the Focal length dictates the amount of DOF. Decrease the fstop value and/or the lens diameter for a more exaggerated contrast between areas that are in focus (sharp) and areas that are out of focus (blurred).
An interesting tool here:
http://think.maxwellrender.com/dof_cue_tool-111...
A very good article here: one thousand times better than mine explaination:
http://en.wikipedia.org/wiki/Depth_of_field
An interesting tool here:
http://think.maxwellrender.com/dof_cue_tool-111.html
A very good article here: one thousand times better than mine explaination:
http://en.wikipedia.org/wiki/Depth_of_field
You could use Blender it is free and it kicks photoworks ass!
Here is my render:
http://img168.imageshack.us/my.php?image=velgxx...
You could use Blender it is free and it kicks photoworks ass!
Here is my render:
http://img168.imageshack.us/my.php?image=velgxx5.png
To Marijn :
1. We are discussion PhotoWorks DOF issues, your comments is not helpful at all.
2. Blender is not a plugin of SolidWorks.
3. Your render is not that good to convince me that it can kick PhotoWorks’s ass.
Here is a tutorial:
http://en.wikibooks.org/wiki/Blender_3D:_Import...
The only problem is that you have to learn some blender.
Here is a tutorial:
http://en.wikibooks.org/wiki/Blender_3D:_Import_and_Render_a_SolidWorks_Model
The only problem is that you have to learn some blender.
Lin, your photoworks camera explanation was great, thanks. It does make since that as a I reduce the amount of light in a scene to creat DOF, indirect illumination, while still used, makes less and less of an impact, because the environment isn’t very bright.
I had normally just used indirect lighting, and used photoshop to create a post-rendering DOF. But with time restraints at work becoming tighter, I started to try to use DOF in conjunction w/ ind. ill. to pop out some renderings w/ little or no post photoshopping.
Thanks for all the comments.
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lin,
I'm a newbie on photoworks 2008. I dont have an OPENGL option on my rendering preview. How do I turn it on?
lin,
I’m a newbie on photoworks 2008. I dont have an OPENGL option on my rendering preview. How do I turn it on?
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