3DS MAX leaf blur?

[craigbennett]

Here is a pic that is in progress. I'm having trouble getting the falling leaf to show a motion blur. What is an easy way to get the "falling motion blur" to show up correct?
Craig Bennett

[rmejia]

Maybe giving the object a material id to easily select it later in photoshop and apply the blur there.

[loydg]

If you are using scanline renderer, be sure you're not on frame "0." It needs to have a frame before to calculate the motion. BTW, great scene! Maybe a little racked focus would top this puppy off.

[craigbennett]

Glen Loyd

I used the MR renderer. I may have to use the scanline if I cant get the MR to produce the blur that I would like.
Craig

[craigbennett]

Glen
Is racked focus the same as MR depth of field? If it is not could you let me know and i'll give it a try. I was going to add depth of field to blur the back trees but if racked focus is somthing else I'll try that.
Craig

[loydg]

Glen
Is racked focus the same as MR depth of field? If it is not could you let me know and i'll give it a try. I was going to add depth of field to blur the back trees but if racked focus is somthing else I'll try that.
Craig

That's the one. On the motion blur, I'll check witha couple guys here and see if they have had similar issues in MR.

[stusic]

I've never tried using Motion Blur on a still image. How does Max know which direction the blur is coming from?

[craigbennett]

Phillip

I have mostly tried using the directional option for Blur Type but I'm not able to make it look right. I was just wondering if there was a easy way in Max to add a directional blur that looked good.

Craig Bennett

[stusic]

Is there an attempt shown in your example? Can you show one? I'll take a look when I get home and see if I can't figure something out...

[loydg]

Forgive me if I'm preaching to the choir here. Motion blur works on a simple process of blending several frames before and after with the "current" frame. Since I'm a v-ray user, I tried to replicate the problem in MR. In order for it to show up a few things have to be in place:

1) The object is animated
2) Mation blur is turned on in the Camera Effects roll-out
3) There are frames before and after to generate the blend (that's why it's typically NOT frame 0.

What I think the issue may be in your scene is that the leaf is not traveling "fast" enough to make the motion blur noticeable. Try closingup your key frames or increase the distance that the leaf is traveling.

Hope that works...

[loydg]

One last thought: If you are looking for a really good motion blur (usually only matters in animation) the best way to do that is to render out a velocity channel through Render Elements. Use that in Combustion to generate Combustion's motion blur. It's a faster way when dealing with a large sequnce of frames and can be adjusted in Combustion.

I think we would all like to conquer this challange in Max, but if push comes to shove with your still, you can always render the leaf out as "selected" with an alpha and apply the motion blur with a Photoshop filter (a bit of a hack, but will work).

[craigbennett]

Sorry about not getting back faster
Yup, closing up the key frames and increasing the distance of travel works. I think that it was mostly the key frames.
Thank you all for the help
Craig

[loydg]

Craig,

Curious if you've gotten toa final image yet. I'd love to see how this turned out.

[stusic]

Craig,

Curious if you've gotten toa final image yet. I'd love to see how this turned out.

I agree, this scene looks great. Did you create this for fun?

[craigbennett]

Nope, I have not had time to finish it. I plan to get back to it but it will be next month. I think that my key frames needed to be closer and the leaf needed to move a little more to get it to work. I'll post a pic after I finsh it.
Thanks for the help on it.
Craig Bennett