Advanced Radial and Motion Blur

Adding a couple of additional settings for radial and motion blur would be very appreciated.
Currently they are applied to the both sides of a sample.
Can we also have:
- limited motion blur which is applied to one of the sides of a sample
- radial blur with two additional options: one with blur towards the centre and one - away from the centre.
That would allow rear and front curtain flash synch immitation.
A couple of other useful improvements for the radial blur:
- optional preview inside the dialogue for positioning the centre of the blur (preview can be static if performance does not allow)
- ability to position the centre of the blur outside of the frame
Thank you,
Alex

Think about this a bit.
Take a simple case: a blue box on a white background, and a blur to the right. On the right edge of the box, the blue pixels get blurred into the white background - just what you want. But on the left edge of the box, the white pixels get blurred into the blue box -- not what you want. And that will happen for any blur**, because it doesn't know about edges, or planes, or foreground/background -- it can only blur the pixels in the image.
You can do directional blurs today with several tools in Photoshop. But you cannot do shape isolated blurs on a single layer because the blur has no way of knowing what should contribute and what should not: what's in front, and what is in back.
What you can do is isolate the foreground shapes by putting them on a separate layer, so the background colors can no longer contribute.
But those "perfect" motion blurs you illustrated aren't going to happen with a single filter operation.
** Edge preserving blurs like SurfaceBlur and Median may look like they know about edges, but they don't. They still operate on values and don't understand separation or direction.

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> <
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Odd motion blur in Log and Capture

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Motion Blur help.

Alrighty, I'm using Photoshop CS4 Extended, and I'm having troubles with motion blur.
When I set the angle to anything above 60 really and distance to about 300 it crashes saying Adobe Photoshop CS4 has encountered a problem and needs to close.
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Any help or ideas?
Thanks in advance!

Thanks a lot Mylenium! I'll do that in a few minutes, by the way heres an update with some more information.
Photoshop crashes when I change the angle to 49 or higher, anything lower is fine.
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Faulting application photoshop.exe, version 11.0.0.0, faulting module mmxcore.8bx, version 11.0.0.0, fault address 0x0000d62a.

Motion blur is messing up my composition

Hey all,
I'm working on a project which involves 3d space (using camera tracker). Everything is going fine until I needed to turn on motion blur for a layer. When i switched it on for the composition, things start to get weird. If you play the video, the null objects visibly "rotate" instantly, move from spot to spot randomly, and it's obvious that something is not right. When i turn off the motion blur, the object right themselves.
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I'm working with 1920x1080p footage 30 fps in CS5.5 on a macbook pro 2.52ghz intel core 2 duo. If you need any other info just let me know.
Thanks
Dan

OK, here's my best guess. When you turn on motion blur time samples differently. The keyframes that are causing the problems are at a z rotation for the camera of 179º. This made me think you were experiencing a gimbal lock with your camera moves. When the camera gimbal locks the camera orientation flips. It has nothing to do with motion blur being enabled on the layers.
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Hello all
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I have a couple of images here to explain better...
http://www.tinycards.co.uk/aftereffects
sorry if this is a stupid mistake!
many thanks

ok half fixed it myself, I discovered the "samples per frame" setting in advanced composition settings
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For exporting the video to a format suitable for burning to Blu-ray (using Encore) I've am using the MPEG-2 Blu-Ray format using either the HDTV 1080i High Quality or the HDTV 720p 59.94 High Quality presets, depending on the format of the original video that I'm compiling.
I didn't notice it at first but when I burned first my test Blu-ray disc I found that the video was having some wierd exaggerated motion blur characteristics going on. Any abrupt movment, such as a person turning their head or a video box shrinking from full screen to half screen would be wildly blurred. I thought it might have been a result of the burn but I subsequently found the problem was introduced during the video export process in Premiere Pro. I just didn't catch it because I wasn't looking closely enough.
Because I am using the default settings for the two presets cited above I'm at a loss about what is introducting this blur or how to go about mitigating it. Anyone got any tips? What could be having such a problem making motion which shouldn't blur too much blur so badly? Thanks in advance for any assistance.

Ok, I'm stumped for the moment. To better illustrate what's going on I'll post some pics of the problem. I'm using a piece of video that's not part of my projects but it does illustrate what's going on pretty well.
The first is what Premiere Pro is displaying for the source video. I'm currently using a Sequence Preset of DVCPROHD 720P 60P even though I don't have the hardware for it. The reason being is it stopped the blur from happening in the timeline and I think that's because this preset had a 59.94 fps preset and the source video was 60fps.
http://www.imagebam.com/image/7bd0af110335520
The second is a Premiere Pro frame grab of what the source video file looks like. I'm using an export of Windows Bitmap with a preset of HD Square Pixel Bitmap 720p. I'm using the Progressive setting because if I choose either Upper or Lower first the image looks even worse.
http://www.imagebam.com/image/9aa895110335495
The third is a Premiere Pro frame grab of what the exported video file looks like. The video was exported using MPEG Blu-ray with a preset of HDTV 720p 59.94 High Quality with no modifications. I'm using an export of Windows Bitmap with a preset of HD Square Pixel Bitmap 720p. I'm using the Progressive setting because if I choose either Upper or Lower first the image looks even worse. Incidentally, this exported video displays in the Premiere Pro timeline with visible motion blur characteristics whereas the source video did not.
http://www.imagebam.com/image/3a2a60110335483
What these images show.
1) The source video displays crisp in Premiere Pro even though this is footage of a video transition.
2) The source video exports out with some motion blur.
3) When you do a frame grab of the exported video the motion blur of the exported video increases.
As I said, I'm stumped. I've tried modifying every setting in the exporter for MPEG Blu-ray with a preset of HDTV 720p 59.94 High Quality and I can't stop this blur. I looked at the H.264 Blu-ray setting but it appears useless. Every time I try to export, the exported video crashes Media Player and when I load it into Premiere Pro I see the video now has motion blur.
At this point I'm wondering if upgrading to CS5 will make a difference or not. That's about the only thing I can think of that I haven't tried yet.

Motion Blur Seams

Is Motion Blur broken? When rendering 3D surfaces with Motion Blur I get visible seams.
Example - 2 same-colored Solids, butted up against each other without a gap look like one big Solid. But if the camera zooms by the seam between the two Solids becomes visible ... the blurred area becomes less than 100% opaque.
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I know this is comparing apples to oranges, but if I perform the same setup (2 planes, moving camera, motion blur) in Softimage, mentalray blurs plane 1 into plane 2 but never 'reveals' the seam with a decrease in opacity.
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Thanks

This is just an artifact of how motion blur is calculated in AE. In real life, motion blur happens to the entire image as seen by the eye or the camera. In AE, on the other hand, each layer is blurred separately for efficiency. It's just as if you place two layers side-by-side with their edges meeting, and applied a blur to each layer. You'd get a transparent seam where the blurs overlap, since each layers' pixels are at less than 100% opacity. You can get even uglier artifacts in some cases when a 3D layer's motion blur actually intersects with a layer that would otherwise obscure that blurred layer. Layers can even appear to render out of order in some cases, thanks to this phenomenon.
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Advanced Radial and Motion Blur

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