Jump to content


Photo

How high can I take shutter angle before extra motion blur?


  • Please log in to reply
4 replies to this topic

#1 Roger Alexander

Roger Alexander
  • Basic Members
  • PipPip
  • 30 posts
  • Cinematographer
  • Atlanta

Posted 01 October 2016 - 09:30 AM

Sometimes when my scene is too dark and I want to brighten it up without raising the ISO (and without adding more light) I will slightly raise the shutter angle from 180 degrees to like 225. Conceptually, I know that 180 is like the standard and doubles your frame rate. When you lower the shutter angle, the shutter speed is faster for that choppy look, and if you raise the shutter angle it slows the shutter speed and adds more motion blur into your shot. (Hopefully I don't have this backwards lol) My question is, how high (slow) can I move my shutter angle above 180 before I start to notice extra motion blur in the image? My goal here is to raise the shutter angle as much as possible to brighten my scene more without a noticing the extra motion blur. I plan to run some camera tests myself but I was curious if there some sort of formula or pre-completed tests on this?
  • 0

#2 Jay Young

Jay Young
  • Basic Members
  • PipPipPipPip
  • 437 posts
  • Cinematographer
  • Lexington KY

Posted 01 October 2016 - 10:00 AM

Why do you not want to add more light? 


  • 0

#3 Stuart Brereton

Stuart Brereton
  • Basic Members
  • PipPipPipPip
  • 2775 posts
  • Cinematographer
  • Los Angeles

Posted 01 October 2016 - 10:05 AM

It depends on your scene. If there is no fast movement, a wider shutter angle can be unnoticeable.


  • 0

#4 David Mullen ASC

David Mullen ASC
  • Sustaining Members
  • 19287 posts
  • Cinematographer
  • Los Angeles

Posted 01 October 2016 - 06:47 PM

Obviously any increase in shutter time will increase motion blur, so how much you notice that depends on how much motion is in the shot and how sensitive you are to such a change -- there isn't some crossover number where it becomes noticeable, it just gets gradually more obvious the more you increase the shutter time depending on the amount of motion in the frame.  If it is a static shot, no motion in the frame, you could shoot with a 360 degree shutter angle and no one would be able to tell.

 

You just have to judge your scene and how much movement there is in it, both subject-wise and camera-wise.


  • 0

#5 Robin R Probyn

Robin R Probyn
  • Basic Members
  • PipPipPipPip
  • 1409 posts
  • Cinematographer
  • Tokyo

Posted 01 October 2016 - 08:18 PM

Why do you not want to add more light? 

 

 

Apart from just plain not having enough lights ..  there are some locations that wont allow any lights at all..  Ive had Art galleries.. Museums .. some hospitals..alot of labs.. ... its alot better in the LED days now.. but their rule books haven't always been up dated..  


  • 0


Ritter Battery

Technodolly

CineLab

Glidecam

FJS International, LLC

Metropolis Post

CineTape

Visual Products

Gamma Ray Digital Inc

Paralinx LLC

Pro 8mm

Quantum Music Works

Broadcast Solutions Inc

ZoomCrane

rebotnix Technologies

Media Blackout - Custom Cables and AKS

Aerial Filmworks

Abel Cine

Rig Wheels Passport

Willys Widgets

Tai Audio

The Slider

CineLab

Pro 8mm

ZoomCrane

Rig Wheels Passport

Metropolis Post

Visual Products

Paralinx LLC

Aerial Filmworks

Willys Widgets

CineTape

Abel Cine

Glidecam

Media Blackout - Custom Cables and AKS

Broadcast Solutions Inc

rebotnix Technologies

Ritter Battery

The Slider

FJS International, LLC

Tai Audio

Gamma Ray Digital Inc

Quantum Music Works

Technodolly