“Skewing” elements in high speed movement

[Christian Reid]

Hey Peter, don’t worry about the english, same problem here.

I know exactly what you’re saying about moving a piece of paper on a desktop scanner and about the slower shutter speeds causing more motion blur.

But what I don’t get is the reason why shooting in multiple numbers (1/60 at 30fps) gives me less rolling shutter than shooting 30fps at non-multiple shutter speeds, even when they are faster, like 1/160.

[Pete Burger]

[Christian Reid] “But what I don’t get is the reason why shooting in multiple numbers (1/60 at 30fps) gives me less rolling shutter than shooting 30fps at non-multiple shutter speeds, even when they are faster, like 1/160.”

I wasn’t aware of that. Doesn’t make any sense to me either… Hmmm… Have to try that myself.

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[Bob Dix]

Christian,
Some time ago Canon Service advised that to get the smoothest result out of the Canon 5 D Mark II set the shutter speed at 1/50 sec, PAL which is 25fps.However ,in bright sunshine the image could be overexposed, you may need to go to 1/125 sec or higher, check the LCD. Also, check this out > :https://www.videomaker.com/article/10418/2/

It appeared to improve the smoothness of the video.

For tape camcorders the default speed is normally, 1/50 or 1/60 sec

But, recently I needed to throw the background in video out of focus by using F/5.6 and speeds in some cases went as high as 1/2000 sec, Frankly I could not fault the smoothness of the video at any speed ? And that certainly gets rid of any dust spots on the sensor ?

This is also worth a look > https://www.canon5dtips.com/the-basics/what-is-the-best-shutter-speed-for-movie-mode/

Freelance Imaging & Video
AUSTRALIA

[Christian Reid]

Hey guys, thanks very much for the assistance.

I’ve made some testing yesterday and the rolling shutter effect has indeed been reduced with my settings to 1/60 at 30fps. And I tested on a FAST subject, an Audi R8 LMS! Really cool…hehe

I hope it fixes my problems from now on, but it is also true that narrowing your stops options to just 1/30 and 1/60 certainly is a pain when you get an overexposed scene. Had the chance to test that also. You were right Bob!

Thanks again, Chris

[Bob Dix]

That’s good, not right all the time, have a win now and then

Freelance Imaging & Video
AUSTRALIA