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  #1  
Old 11-12-2015, 09:55 PM
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ChiefPilot ChiefPilot is offline
 
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Location: Twin Cities, MN
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Default Rolling shutter explained

Came across this image on reddit, thought some here might find it interesting. It's a visual explanation of the rolling shutter effect on the prop on all the RV videos that get posted around here.

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  #2  
Old 11-13-2015, 03:23 AM
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RV6airplanePilot RV6airplanePilot is offline
 
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Default True, but fixable

https://www.youtube.com/watch?v=UljfdzjZ2VY

via Gopro with 2 sunglass filters carefully taped on, Gopro mounted to bill of my baseball hat with double tape and alum strip with 2 bends to fit curve of bill (camera removed from orig case). Purchase of optional remote mic highly recommended. Only about $25. Can be put in earcup of headset.
https://www.youtube.com/watch?v=Hv1qEXk7slU
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  #3  
Old 11-13-2015, 06:05 AM
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ChiefPilot ChiefPilot is offline
 
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Default

Quote:
Originally Posted by RV6airplanePilot View Post
https://www.youtube.com/watch?v=UljfdzjZ2VY

via Gopro with 2 sunglass filters carefully taped on, Gopro mounted to bill of my baseball hat with double tape and alum strip with 2 bends to fit curve of bill (camera removed from orig case). Purchase of optional remote mic highly recommended. Only about $25. Can be put in earcup of headset.
https://www.youtube.com/watch?v=Hv1qEXk7slU
Oh for sure - addressing it is trivial. I just thought this was a nice visual explanation.
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  #4  
Old 11-13-2015, 06:37 AM
n816kc n816kc is offline
 
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Location: Winter Haven, FL
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Default comprendo?!

great visual depiction.
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  #5  
Old 11-13-2015, 07:24 AM
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RV6airplanePilot RV6airplanePilot is offline
 
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Default Yes, very good

Quote:
Originally Posted by ChiefPilot View Post
Oh for sure - addressing it is trivial. I just thought this was a nice visual explanation.
Yes, it is a good explanation. I also think many don't know how to fix; as you said most videos posted have the "distraction".
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Dale
ATP, dreamer and maintainer; but not a builder
RV6a N18XP 960TT (builder: Jerry Cochran)
RV6a flight experience 2100 hrs
Superior IO-360 2007
Hartzell Blended Airfoil Prop
Dual LS EI, Dual Battery
GRT HX efis & RAIM GPS, 2 axis GRT autopilot
G696, GDL39 WX, Traffic
Dynon D10
Gear Leg Stiffeners from Woodmanrog
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  #6  
Old 11-13-2015, 08:11 AM
Rupester Rupester is offline
 
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Location: Mahomet, Illinois
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Default

Excellent! Always wondered why that weird prop effect always showed. Thanks for posting.
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  #7  
Old 11-13-2015, 10:49 AM
C. Brenden C. Brenden is offline
 
Join Date: May 2007
Location: Rio Rancho, NM
Posts: 136
Default sunglass filter?

Love the graphic explanation of the rolling shutter. Your filter seems to have been a great fix! What material works best to filter out the prop and where is a good source?
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Craig Brenden

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  #8  
Old 11-13-2015, 11:44 AM
RVDan RVDan is offline
 
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Default

Here is a practical demonstration of what rolling shutter is about and the cure.

https://youtu.be/4lHlzRw_Oek
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  #9  
Old 11-13-2015, 12:58 PM
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RV7A Flyer RV7A Flyer is offline
 
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Default

Back in the old days of film, focal plane shutters would cause "curved props" unless the lens was stopped down and the shutter speed slowed.

Leaf or diaphragm shutters would not do this, IIRC.
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  #10  
Old 11-13-2015, 02:25 PM
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mike newall mike newall is offline
 
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Default

https://www.youtube.com/watch?v=QmQR...ature=youtu.be


Shows the effect of a neutral density filter on a GoPro.
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