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Subject: C4 tidbit...


MarkBremmer ( ) posted Wed, 13 October 2004 at 10:33 PM ยท edited Tue, 07 January 2025 at 3:07 PM

file_134103.jpg

I'd mentioned in an earlier post about the raytraced depth of field improvement and how it works through transparent objects. Well the new motion blur tool also works through transparent objects now.

While this is a rather basic image, it should start your mind turning over the possiblities - maybe spaceships flying outside glass windows, propellers spinning as seen from a cockpit, scenery speeding by viewed through a motorcycle windshield, torpedos moving through water....you get the idea.

Mark






Vidar ( ) posted Wed, 13 October 2004 at 11:27 PM

Thanks Mark.:)


claudiomil ( ) posted Fri, 15 October 2004 at 8:54 AM

Love it, but I have a question; the new motion blur tool creates blur based on the movement of items in a scene even if you render one frame?


MarkBremmer ( ) posted Fri, 15 October 2004 at 9:11 AM

You are correct about the movement calculation. The object has to have motion of some kind. So, you do need to have timeline in with motion in effect, even if you are not doing an animation. The big advantage is that delicate, post render retouching is not required to blur overlapping objects for still renders. Also, motion blurs in perspective are now super easy. For single frame/still images, C4 renders and composites the multiple frames for your single image result. You do have control over how many frames you want it to render for the results as well as how dynamic the blurring is. You can also control if the blurring occurs ahead of, behind or occurs in both directions the object is moving.






falconperigot ( ) posted Fri, 15 October 2004 at 11:02 AM

Cool. Thanks Mark!


claudiomil ( ) posted Fri, 15 October 2004 at 1:55 PM

Mark, you should be on eovia's marketing office. I thing I'll cancel my order and re-order double just for that.
Very nice feature!

Thanks Mark!


sfdex ( ) posted Fri, 15 October 2004 at 6:55 PM

Motion Blur question -- Does it slow rendering down tremendously? I remember a wonderful motion blur after-market free plug for RayDream called pseud-blur that looked amazing, but tripled (or more) the length of time to render a scene. Any idea how this works? Does it time-scrub and blur based on that? I'm very excited about it; motion blur goes such a long way toward making animations feel photo-real.


MarkBremmer ( ) posted Fri, 15 October 2004 at 7:29 PM

sfdex, Just like GI settings, it requires a little finessing and intelligent use of settings. Heap on a bunch of effects or max out certain settings and your computer system will be gasping for air. It does essentially "scrub" the time line so here is how I estimate rendertime so I can adjust my settings well: I render the image without blur and check the time. Next, you can set how many frames you want rendered to create the effect. I'll start with 10. You can also have the blur occur in front, behind or in both directions. If I choose "both" it will render 10 frames in front and 10 frames behind plus the original frame for a total of 21. Then I just do the math and make adjustments as required. Mark






sfdex ( ) posted Fri, 15 October 2004 at 8:07 PM

Thanks so much for the info. It sounds excellent. I have a motion-blur imposing plug-in for AfterEffects that does a great job, but there are times when it's just not right and true blur based on the actual motion and geometry of the scene (as opposed to pixel tracking) will come in very handy, indeed. I'm so looking forward to getting C4! - Dex


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