Motion blur, how do you go about it?

KND

Do you do it within Daz? Do you do it in post? Do you do it manually? Do you do do and how?

I shall refrain from uttering my grievances for not having a built in option for motion blur in the render engine, but simply ask how do you do?

I'm gonna assume most will be working with stills, but also want to hear about animation. Maybe people have some clever tricks?

Paintbox

There was a thread on this recently, I think some people suggested a compositor like Nuke etc. for such a job. I have no experience with it, but maybe if you search for motion blur, it will come up.

deadgemini_db6f21ea56

Personally, I prefer to do motion blur in post, when needed. I like to have control of the effect as much as possible. Generally speaking, using Photoshop, my process involves layering multiple copies of my image, applying the motion blur where necessary and combining the layers accordingly, either with erasing certain parts, or via layer effects. I'm sure others have their own way ... and probably a simpler way .. but as I use Luxrender exclusively, there really is no other option that I'm aware of anyway.

KND

So Daz Studio can run an external render engine? Or do you export scenes to another program?

Makes me wonder if Daz supports vectors? If i can export vectors into Blender then i can import the rendered image and apply a vector blur. That would be an awesome solution.

deadgemini_db6f21ea56

Yes and no. There are several options for using an external render engine in Studio .. some of which are handled via plug ins while others are handled via exporting. In the case of Luxrender, you can use either Reality or Luxus (though I'm unsure if Luxus is supported any longer). I know of people that use Cycles to render their Daz scenes, but I know little to nothing about how they go about exporting it to Blender; whether they export the entire scene or if they do so piece by piece and set up the scene in Blender itself. I'm sure there are others far more knowledgeable about it than I am.

KND

Considering Cycles there is a new render engine is coming up for Blender. With EEVEE there will be real-time visualization aka the death of all fireflies and noise.

Kevin Sanderson

Motion blur is an option in 3Delight in DAZ Studio. The Iray version in DAZ Studio does not have it yet.

If you have Vegas or After Effects, you can use ReelSmart Motion Blur which is quite good and will actually save you render time. https://revisionfx.com/products/rsmb/

kaotkbliss

Dang, I want that creature in DS LOL

nomad-ads_8ecd56922e

There is actually an add-on package called Motion Blur for Iray, which I've bought but not used yet.  I don't tihnk it's literally so much making a blur, though, as stamping down a gazillion static images of the object you want to have exibitting a motion blur.

Tobor

For Iray you can achieve very good motion blur of a subject by using the canvas feature. Canvases can be a arcane at first, but they have such wide uses that it's worth it. 

Basically, you do two canvas Beauty renders: The first is just the object that will be blurred, and the other is everything else. Smack the two images together in any image manipulation program. Photoshop and other higher end programs have a motion blur filter, and you can control the direction and amount of blur. Apply it just to the first render. The background remains untouched.

Once you get the steps this takes just a wee longer to do than a static render.

KND

Kevin Sanderson said:

Motion blur is an option in 3Delight in DAZ Studio. The Iray version in DAZ Studio does not have it yet.

If you have Vegas or After Effects, you can use ReelSmart Motion Blur which is quite good and will actually save you render time. https://revisionfx.com/products/rsmb/

Nice demo, but this would be a solution for animations only assuming it works by comparing frames. Concerning the motion vectors that i can do in Blender, but i don't think Daz has motion vectors to export.

nomad-ads_8ecd56922e said:

There is actually an add-on package called Motion Blur for Iray, which I've bought but not used yet.  I don't tihnk it's literally so much making a blur, though, as stamping down a gazillion static images of the object you want to have exibitting a motion blur.

I have considered it, it's the same type of motion blur achieved within the old Blender internal render engine by compressing a sequence. Works good with limited motion, but when rendering action it becomes a choppy echo of images. It's a clever trick but not good enough for my taste.

Tobor said:

For Iray you can achieve very good motion blur of a subject by using the canvas feature. Canvases can be a arcane at first, but they have such wide uses that it's worth it. 

Basically, you do two canvas Beauty renders: The first is just the object that will be blurred, and the other is everything else. Smack the two images together in any image manipulation program. Photoshop and other higher end programs have a motion blur filter, and you can control the direction and amount of blur. Apply it just to the first render. The background remains untouched.

Once you get the steps this takes just a wee longer to do than a static render.

Sounds interesting, never used a canvas before, i'm literally visualizing a linnen cloth around a wooden frame. I'll check it out for sure.

Tobor

KND said:

Sounds interesting, never used a canvas before, i'm literally visualizing a linnen cloth around a wooden frame. I'll check it out for sure.

Everything Iray does is with a canvas. That's what they call the "writing surface" that the render appears on. The Canvas feature (available under Advanced in the Render panel) allows you to take more control of canvases and manipulate the component parts that go onto them.

Check out the threads here for for general concepts. What you basically want is two "Beauty" renders (these are renders that have all the components that go into a final image). Use the Node feature inside the Canvas panel to select the scene elements for the the background (which won't be blurred) and foreground (which will be blurred). Be sure to set the Use Alpha option on for your foreground element(s) so you can layer the resulting image in your graphics program. You can do both beauty passes at the same time, until you get the hang of it just do one at a time. It'll double the rendering time but it's a better way to learn.

When you're done you'll get the regular image in the render window, plus a high dynamic 32-bit version of the scene in a separate folder. Unless you know how to use 32-bit HDR images in your praphics program just ignore these for now. Stick with the regular 8-bit output images you've been working with so far.