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rolling shutter advice..

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kalimerox
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rolling shutter advice..

Tue Feb 02, 2016 5:06 pm
Is there a way to get rid of rolling shutter effect? I know how i can avoid rolling shutter by shooting at slow frame rates, but for example when i record 100fps to slow it down afterwards, i still get some rolling shutter artifacts.. is there a fix for this or an effect that might "hide" or mask this effect a little bit?
here s an example video i shot with a sony a7s at super low light, where rolling shutter gets prominent around minute 0.50min
https://vimeo.com/153935185


pass: shutter
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CorrosiveTruths
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Re: rolling shutter advice..

Tue Feb 02, 2016 5:16 pm
kalimerox wrote:Is there a way to get rid of rolling shutter effect? I know how i can avoid rolling shutter by shooting at slow frame rates, but for example when i record 100fps to slow it down afterwards, i still get some rolling shutter artifacts.. is there a fix for this or an effect that might "hide" or mask this effect a little bit?
here s an example video i shot with a sony a7s at super low light, where rolling shutter gets prominent around minute 0.50min
https://vimeo.com/153935185


pass: shutter

There's a "Nikon D90 Stairstepping fix" filter under Misc, never used it, so I don't know if it applies in general or not.
kalimerox
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Re: rolling shutter advice..

Wed Feb 03, 2016 11:00 am
Thank you!

i tried, I n preview I cant see any difference, but I m just rendering and will see if the effect does something on the final image...

update: unfortunately there s no difference in the rolling shutter with or without effect applied...
zekthedeadcow
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Re: rolling shutter advice..

Wed Feb 03, 2016 12:17 pm
Stair-stepping is a completely different problem from rolling shutter...

You may be able to compensate manually with 'crop and transform'->'Rotate and Shear' ... by animating the rotation and shearing for the shots you want. The problem is that rolling shutter changes perspective in that foreground elements are moving faster , and therefore more skewed, than background elements... so correcting the foreground will mess up the background. But, considering everything in yours is pretty much a closeup you may be able to do it.

I will add that VirtualDub has a plugin called Deshaker which appears to offer rolling shutter compensation.

I will also add some advice I received in the past - "Sometimes, just accentuate whats bad so it looks like you did it on purpose." :)
kalimerox
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Re: rolling shutter advice..

Wed Feb 03, 2016 12:59 pm
zekthedeadcow wrote:I will also add some advice I received in the past - "Sometimes, just accentuate whats bad so it looks like you did it on purpose." :)


oh that is a lot the way i work, thanks! ;) only thing is: i like all kind of glitches and pixels etc, but when it comes to rolling shutter, maybe my eye is too much trained on it.. i dont like it much...

never heard of virtual dub, will check that out right now..
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CorrosiveTruths
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Re: rolling shutter advice..

Wed Feb 03, 2016 1:21 pm
zekthedeadcow wrote:Stair-stepping is a completely different problem from rolling shutter...

Quite right, not sure where I got that from (I think I had a thing that fixed both so conflated them).


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