Rolling shutter is a problem when?

4 years 7 months ago #656079 by Mayo
When you see someone doing a rolling shutter test.  In realistic world scenarios, when would this be an issue? 

Canon 5D - Canon 50mm f/1.4 | Canon 17-55mm f/2.8 | Canon 70-200 f/4L
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4 years 7 months ago #656081 by Nikon Shooter
Only when shooting in video.

Light is free… capturing it is not!
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4 years 7 months ago - 4 years 7 months ago #656083 by Shadowfixer1

Nikon Shooter wrote: Only when shooting in video.

Sorry. That's not correct. It's not just video. Rolling shutter is from using the electronic shutter. If you shot a moving object like a car, motorcycle, airplane propeller, you will get elongated, egg shaped wheels. Propeller blades the are extremely curved. The reason is the electronic shutter reads line by line from the sensor. If an object is moving, the readout at the bottom will be in a different location than when the reading began. That is why the big clamor for a global shutter. A sensor that is fast enough that the image is read from top to bottom at the same instant. This prevents rolling shutter. Newer cameras are getting closer but not there yet. 

www.picturecorrect.com/tips/rolling-camera-shutter-explained/
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4 years 7 months ago #656103 by Nikon Shooter
Your extended explanation says HOW it happens, Randy, as 
my reply said WHEN it happens and so, was not incorrect.




Light is free… capturing it is not!
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4 years 7 months ago #656104 by Nikon Shooter
With photography, the SS is normally waaaay faster than
with video… avoiding the effect totally.

Light is free… capturing it is not!
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4 years 7 months ago - 4 years 7 months ago #656154 by Shadowfixer1

Nikon Shooter wrote: Your extended explanation says HOW it happens, Randy, as 
my reply said WHEN it happens and so, was not incorrect.



Your answer said "only when shooting in video". That is not the "only when." It effects both stills and video so your initial answer was incorrect. I just explained and pointed out what it was and when it happens. I didn't supply numerous stills images showing the effect. Those are readily available online if anyone wants to search. Maybe you should research those still images yourself so you would know the effects. Whether or not the shutter speed reduces the effect depends on the speed of the object you are shooting. The faster the movement, the more pronounced the distortion. 
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