Motion Blur Only Download
Isidora Herline
I have some objects in C4D scaling up from 0 with an effector. These objects pop in almost instantly, 1-2 frames. There's quite a bit of camera movement in the scene so I need to render it with motion blur. But when I turn it on, the objects get blurry when they scale in, which is something I don't want.
My recent experience rendering a scene with a LOT of motion blur showed me that scene motion blur took forever to render, like in it letting it go over night and looked like garbage. Scene blur took each frame and rendered it a set number of times as sub-frames, in my case 32 passes, that were then added together to create a motion blur effect that unless the number of sub-frame passes than 32 is much higher, looked terrible.
Vector Blur uses the same motion blur tag that scene blur does, but is set in the render effects window. The blur looked like actual film motion blur and took much less time to render. The only drawback that I could see was some clipping of objects that were partly off screen, as in if the object was out of frame at the beginning of the blur and in the frame at the end, no motion blur was rendered which, so far, has been undetectable in final playback.
SMB is out of control for any kind of long renders. Another workflow is set up a motion vector pass and composite in AE using ReelSmart Motion Blur Pro, with the Vector blur effect referencing the motion vector pass.
Have you thought about doing your motion blur in post? I almost always use RE:Vision Reel Smart Motion Blur in After Effects. It uses optical flow and gives a terrific effect with a fraction of the render time as Scene Blur. The Pro version can even read the Motion Vector channel output in Multi-Pass renders.
In my first mobile phone photography article I looked at the idea of making the subject of an image stand out by using a shallow depth of field. This week, in my final article, I wanted to look at another really great method to make the subject of an image stand out, motion blur. I also wanted to get a little bit artistic with it, but more on that later.
The beauty of motion blur is that not only does it blur the background and make the subject stand out but it also adds that dynamic sense of speed and movement that freezing an entire scene with a fast shutter can lack. As with traditional photography equipment and software, motion blur can be achieved straight out of mobile phone camera or, if we wish to simulate it in post processing we can do.
However as mobile phone technology has advanced, developers have given us the ability to take manual control of those other two exposure triangle elements. As a result we have some control over shutter speed and therefore some control over whether we want to freeze a moving subject or include an element of motion blur. The following screen grabs from my preferred IOS camera replacement app ProCamera8 demonstrate:
The point of all this? In normal light situations it is possible to raise and lower shutter speed in a wide range much lower and higher than this example and therefore elect to either freeze an image or by panning with a slow shutter speed at the time of capture generate motion blur straight out of mobile phone camera.
Stationary camera allowing the bus to move between me and the background. The bus station being quite a dark place means that even though the bus was just pulling off and moving very slowly, the slow shutter speed generated an interesting motion blur effect. Almost an ethereal feel.
Here we see an image at capture side by side with an image quickly edited to add motion blur in AfterFocus. It gives the impression of a panned slow shutter speed capture and is I think very authentic.
Known as Skip to friends, Paul is an exhibited, commissioned and prize winning iPhone photographer from Lincoln, England. He runs his own successful blog at skipology.com outlining the apps and processes involved in creating his images. His style ranges from low edit street shots to highly textured / painterly composites all created using only the iPhone and iPad. Socially, connect with Skip on Facebook at www.facebook.com/skipology Instagram at instagram.com/skipology or Twitter at twitter.com/skipology
[EDIT] Just to clarify, I'm using motion blur to refer to the renderer integrating over time. I'm not asking about an image space selective blur or approximation, but a physically accurate render and effect.
I haven't had any luck with either setting a moving object for focus tracking or setting keyframes in the distance field. In both cases focus does change correctly when moving between each frame, just not in a render with motion blur.
There may be none or little actual movement for the motion blur but changing focus during an exposure can add interesting effects. Here, I'm use the name motion blur to refer to integrating over time which is what the effect actually does, rather than literal blur from motion.
Case 2. You have a shallow depth of field (and still want the effect that gives), but you want motion blur of a subject moving perpendicular to the focal plane without the defocusing effects of Case 1. Tracking the moving object (with focus only and the camera remaining stationary) would give this effect. In doing so the background will not be blurry from motion, but may change focus a little.
Motion blur is separate from Depth of field (camera blur). The object will only be more in focus if either the motion blur is turned down or there is less movement of the object relative to the camera.
Because motion blur blurs everything if your camera is moving. Try adding motion blur via compositing by using the vector pass and blurring manualy. This way you can also create a mask to keep the cube sharp.I hope this is what you where looking for!
I am looking to smooth out the "Keystone Cops" kind of action you get when you siginificantly upspeed people moving. Some kind of combination of motion blur and trailing, so you see the prople whiz around in sort of a milky blur. The BCC Motion Blur effect only seems to morph the area around the moving action, shich looks wierd.
I am looking to smooth out the "Keystone Cops" kind of action you getwhen you siginificantly upspeed people moving. Some kind ofcombination of motion blur and trailing, so you see the prople whizaround in sort of a milky blur. The BCC Motion Blur effect only seemsto morph the area around the moving action, shich looks wierd.
I find that (for best effect) you have to apply it to the 'original' clip (not speeded up) - this will produce quite diffuse motion blurs. Then speed this up (via mixdown) to the same speed as your upspeeded clip. If the features (e.g.people) have become too diffuse, then try layering the 'non temporal blurred'/original upspeeded clip via superimpose or something to achieve the best result.
- Apply BCC Temporal Blur to the bottom video track (e.g. V1) and dial in the settings you like, which can be keyframed as well. If your footage was shot with a locked camera, then the temporal blur will do a nice job of only applying the blurred trails to the object that is moving.
- Create a new video track (V2) and edit in the same footage as in V1. Apply a BCC Composite filter to the upper track(v1). In the Effect Editor of the BCC Composite controls, choose an Apply Mode setting that allows you to composite in some of the original footage back over the blurred footage (e.g. Hard Light). That way, you can still see your keystone cop without it being obliterated by the blur.
What you describe is similar to an approach called "Deconvolution". As far as I am concerned it is not implemented in Affinity. Smart Deblur has a motion blur deconvolution (I have no experiences with it).
You can find implementations of deconvolution in RawTherapee and gmic (plugin collection that also works in Affinity Photo) but as far as I am concerned these can only be applied to circular blurs, not to motion blurs. In general, you are very quickly in advanced math space with deblurring.
One method you can try is using the Emboss filter (Filters > Colours > Emboss) in soft light and try to shift the pixels in a direction opposite to the motion blur.
If you start with a little motion blur, you might be able to see some improvement.
The "causes a problem only the first shot" reminds me of the topic that resulted in Canon agreeing there was a problem and changing the firmware. But note that this problem only was known to occur with non-IS lenses. It caused the IS to rotate the image, whereas in your case, it is shifting vertically (in landscape orientation).
Since the blur is worse at the bottom rather than the top, and the image is inverted, it suggests that the IBIS/IS is messing up or not working or restarting when the shutter is pressed when it should be running all the time.
Just in theory - if I have 10 PRT loaders referencing the same dataset - Is it loaded once or 10 times?
And I believe it would work only in case the particle is in fact moving. It does not seem to work with combinig velocity channel transformed to moveing camera space.
They have to be loaded 10 times currently. The instancing is done only to simplify the management if you decide to tweak the settings of the PRT Loaders - adding/removing files, changing counts etc. If you change one, all 10 will change. But at render time, each modifier stack has to be processed individually, so each PRT Loader will have to read again from disk.
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