Motion Blur?
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Motion Blur?
Doc Acme
Posts: 1,153
in The Commons
I know DS can do DOF, but Im not finding any settings for Motion Blur. Can it? If so, where to find settings?
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You need to render in 3Delight, go to render settings editor/advanced, there is a checkbox and qualitysettings.
There is a producti n the store for IRay, but I very rarely see it being used, so guess it's not very good?
DOF is an optical effect that can be applied on a ray by ray basis, so it doesn't really add to the computational load of the rendering.
Convincing motion blur requires you to render a (relatively) small number of rays, move whatever is moving in the scene, render more rays. Ideally, it should be done by a Monte Carlo method, moving the movable stuff to some point on the timeline in the motion blur interval, rendering some rays, moving to a different point in time, rendering again. Because the motions have to converge (especially in these days of dForce dynamics) this would take a very long time.
Thanks for the info guys.
Kinda defeats the pluses of Iray. No MoBlur. No IES lights.
I'm been gradually migrating things over to Lightwave largely for those reasons but thought I should check if there was some hidden mode in DS I wasn't aware of.
This took less than a min. to render in Lightwave:
Iray does support IES lights but I think it only supports a subset of the standards. There's a few forum threads about it. Iray the render engine does support motion blur but the implementation of Iray in DAZ Studio does not.
Run it through after effects and put pixel motion blur on it and you should be able to get what you want!
A fragment of memory, someone wrote a script to composite motion blur from a bunch of images.
https://www.daz3d.com/motion-blur-for-iray
The examples still look every bit as horrible as I remember.
I have the motion blur for iray product, but I never use it, because it's takes me much to much time to get a motion blur effecft witht his tool.
It's faster to render just the image and a canvas image (with alpha channel transarency) of the figure with an other pose and create than the motion blur in postwork with your 2D graphic editor.
I attach an example of a comic I'm currently working on.
I tagged it for future reference, but just looking at the screen shots,... meh.
I've got the flow down now where I can go from Daz to Lightwave in minutes via FBX 2012. Issues I had earlier were using FBX 2014. All the textures AND rigging are translating. Textures come in as standard and it's a quick matter of converting to Principled BSDF, but that doesn't really fully set them up. I've another utility that will though, once the rest of the maps are copied over to the one when the FBX was made. Then for each surface you apply the PBR importer script to each surface.
From there, it's just a simple matter of enabling motion blur in the Camera panel where you've half a dozen params to tweek.
I STRONGLY agree with those recommending you do motion blur in a post production software, since you can do it in real time, you have tons of control, and you don't have to tweak and re-render and tweak again and re-render. I also am a strong supporter of post production as a standard practice for just about everything I do in 3D rendering and any other image processing. There are so many advantages, like saving on render time, saving on GPU VRAM requirements (if you render in layers), providing tons of artistic control, and on and on. Below is a crummy image I did using Nuke as a post-processing tool, and the motion blur was done and adjusted in real time. It also allowed me to place the rendered fighter over a real photo of a sky. I rarely ever just do single full-scene renders, and instead render in layers (canvases in Iray) and bring the layers together in Nuke. It's awesome awesomeness.
Luckily 3DL happens to be my preferred render engine
All I need to do is check the box, set the amount and number of samples.
I find it easier to do this in post work. There is also a topaz lab filter that you can use to do this.
My vote is for postwork.
Well, to each his own butfrankly I've WAY more control doing at render time with camera settings. I mean as an example, can you dial in rolling shutter effects in PS or AE?
No idea. I guess you'd have to ask google about that. Though I thought rolling shutter was something to be removed, not added.
In any case, I'm wondering if you've actually tried postwork/compositing, because I think if you're interested in having control I don't think you can get better control than in a good postwork app. And I *think* that 90% of all professional 3D-type artists or production companies use postwork on virtually everything they produce, since it provides so much artistic control. But if you want a perfect solution that does absolutely everything then yeah, I think you'll be disappointed.
hmm, one could do two renders - one in Iray with propellers hidden, and another render from same angle in 3Ddelight of only the propellers with motion blur applied in the usual manner... then blend the two in post.
BTW, Iray/Studio has IES lights. Just go to the Emission settings in your Iray material and there's an "Emission Profile" where you can tell it what .ies file to use.
Here's a simple emissive sphere with a spotlight IES profile applied.
Not if you're needing that for an effect or need to blend with footage that already has it.
Oh ya, multi layered compositing, etc., sure. But the less you have to do post in a production environment, the better.
OK then. I'll definitely look into that. Was given some misleading info in another thread I think.
Here's an example of a still image I did using pixel motion blur in After Effects. I did four or frames of the train going past, put it into after effets and applied Pixel Motion Blur and just played the dials until I got it to where it looked like the train was whizzing past him. You have to do a few frames for the after effects thing to work, but you could just layer the image and just render that and comp it in.
Generally for motion blur folks tend to use a "motion vector" pass or similar, then just load the image and the motion vector pass into the post software and it will do it accurately, while also giving you a lot of control. And generally a motion blur is a blur in the direction of motion as the light bouncing off the moving object lights the film while the shutter is open. I'm sure there are tons of images on the net that can give you a good reference for actual motion blur for planes, trains, and automobiles.