After a lot of awkward talking into a camera, I finally managed to finish my video tutorial on shutter angle! If you are not sure what shutter angle is and how it can help you make your DSLR video look more like film, please watch my latest SurfacedStudio tutorial :D
In addition to the video I have written up the following tutorial to go into a few more details on shutter angle and why it is so important.
Have you ever taken a video with your DSLR and it ended up looking more like some cheap home made clip rather than high quality film? While there are a lot of steps taken in post-processing to make the footage look sleek and polished, one simple principle you can utilise right now to improve the quality of your videos is shutter angle.
When you take video with your DSLR in automatic mode two bad things will happen:
To understand why changing the shutter speed during filming is a bad thing, we first need to discuss the effect shutter speed has on your video.
The shutter speed of your camera controls how much motion blur you will see in every single frame of video footage. Unless the amount of motion blur in the video is similar to the amount we see in our every day lives, the footage will not feel natural to us. Our brain will perceive the differences and distance us from what is happening on screen :?
Have a look at these two images:
The falling ball in the left image has a lot more motion blur because the photo was taken with a slower shutter speed of 1/30s. The falling ball on the right side has a lot less motion blur because the shutter speed was faster at 1/100s. While this example is a photo, the effect of shutter speed on video is the same! The amount of motion blur in every single frame is controlled by your shutter speed.
The camera trying to maintain even brightness in your video by constantly changing the shutter speed is bad because it changes the amount of motion blur from frame to frame, creating a very inconsistent feel :(
Most of the time, we are used to seeing a certain amount of motion blur with our naked eye - just try to swipe your hand in front of your face and you see what I mean. Sometimes we have 'blurry vision' and all movement around us seems to leave more streaks than normally. Other times we receive an adrenaline rush and suddenly everything we see and hear appears were sharp and rich in details.
By using a specific (fixed) shutter speed we can give our film a certain amount of motion blur, depending on what effect we are after:
So now to the real question: Why is it called 'shutter angle'?
Hi. Very informative tutorial.I was reading up about the shutter angle and I notice your placement of the shutter disc up at the corner of the frame differs from the pictures in both wikipedia's and this article on the cinematic look.So which one is correct, or are all the placements possible? I understand it doesn't matter for digital cameras, but it still nice to know.
Thanks for the comment.
Yeah, it seems that most explanations of shutter angle show the rotary disc shutter attached in the middle of the frame rather than at the corner. To be honest, I haven't really noticed till you pointed it out, but I don't think it matters much where on the film the shutter sits - as long as the film and the shutter are in sync, the exposure control for each frame should work the same way.I could be wrong and if you do find any information to the contrary, feel free to let me know and I will include a note in the video to point this out :)
Yes, it probably doesn't matter at all. That article also mentioned some other shutter types, so it may be camera dependent.I was just curious. :)
i've some problem how to make video with my D300s + 50mm 1.8 and 17-70mm 2.8-4.5 ..this is my questions :how do i get the best setting video in low light?, too much noise when i shootting in low light. advice me...thank you
Hello! I apologize for my poor English. I think it should be noted, in order to get the desired shutter speed, nice motion blur, but not an overexposed footage, in bright light or very sunny day, the only solution is to use a neutral density (ND) filter on the lens and regulate the amount of light that enters. Sometimes is (especially if you want to shoot with a large aperture) even ISO 100 too much.Great site, great AE tutorials :)
Thanks for a good explanation!
I don't understand why shutter angle determines the film like motion blur and not the shutter speed.Shooting 30p at 1/50 vs 25p at 1/50 gives the same motion blur, but smoother (less jagged) motion, doesn't it?
Ya,the above filming speed and the shutter speed can be achieved by using the following formulae I got it from one of the article:
1/filming speed(FPS) * shutter angle opening/360 degrees = 1/x seconds.
1/24fps * 180 degrees/360 degrees = 1/48 second.I hope it might be helpulfull.............