Shutter Speed Modes Explained - EOS R5C Tip #3
Вставка
- Опубліковано 31 лип 2024
- In this episode of R5C tips and tricks, we’re looking at the Shutter Mode or shutter speed mode setting. This setting controls how the shutter behaves when shooting video. You have 5 choices: off, slow, clear scan, angle and speed.
Off disables control over the shutter and sets it to the reciprocal of the frame rate.
Slow enables shutter speeds that are slower than the slowest speed normally allowed by the currently selected frame rate.
Clear Scan provides fine control over the shutter speed allowing the camera to by synchronized with flickering light sources.
Angle allows using the traditional cinema style shutter angle settings.
Speed, allows you to specify a shutter speed in fractions of a second.
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Chapters
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00:00 Intro
00:34 Off
01:59 Slow
03:52 Clear Scan
05:36 Speed
07:27 Angle
11:07 When and why to change the shutter mode
14:40 What do I use? - Наука та технологія
You are hilarious!! More importantly, you are informative! I have not found a better comprehensive set of tutorials on UA-cam. Bravo!!!
Thanks so much for a great explanation! 👍🏻You make really great videos ✨
best explanation for R5C in my work flow. Thank you
Thx for the Scan Mode explaining
Thanks for the video
Had no idea what angle was for. Thanks!
Unmatched detail!
Ok lots of good info. How will my editing be effected? I used to set record before I had angles at 23.96fps or 29.ect.. then the editor was set the same way. How does it look with 25 fps in a 23.96 time line?
Generally, the bigger problem you'll have with interpolating video from one frame rate to another is the frame rate, not the shutter speed differences. For example, the difference in motion blur between 24 and 25 FPS with a 180° shutter angle isn't going to be that obvious, if it's noticeable at all. However, the NLE is going to have to figure out how to interpolate between the two which is going to involve dropping frames somewhere, and that could potentially lead to perceptible jumps when it happens.
With bigger jumps, like going from 60 FPS to 24 FPS, the effect would be more pronounced, this is an area I haven't really spent a lot of time looking at.
Though, I haven't really dug into that kind of frame rate shifting and what NLEs will do about it. There may be some processing magic that goes on to fix it, or it just might not matter.
I like the angle mode in the sense of it ensures that you don’t forget to double your frame rate and it’s less work to do, however, there are times it’s so bright outside even for when I have my ND filter on I need to kick up the shutter a few more steps for exposure purposes because I like the look of a shallow depth of field. Is there anything to jump up the shutter in angle mode or am I just going to have to use the old fashion shutter mode?
You can hit the M.Fn button and select the shutter speed (it will highlight in orange) and change it with the dials in those circumstances. Just remember, with shutter angles, smaller angles produce faster exposures.
So angle, not matter what fps you seleect will automatically select the corresponding shutter? I'm coming from DSLR, this is very educational. Thanks for posting.
It sounds like you're on the right path.
You can think of the shutter angle as a fraction (x/360) that always relates the exposure time to the frame time. So any time you change the frame rate, it changes the shutter speed to keep the same relative amount of blur.
You could also think of it as a kind of "motion blur priority" mode where you set the angle to get the motion blur you're looking for and it adjusts the shutter speed so that the motion blur stays "right" on a per frame basis when you change shutter speeds.
Truthfully it's a bit of an anachronism in a modern camera, but it still can be useful.
Great vid. Left me with questions though. I also have an r5 and R5c. How do you best match shutter speed in R5 to what the R5c is shooting in angle so that the exposures match including the motion blur? Or it sounds like the motion blur won’t be the same in shutter speed? Thx
The easiest way would be to set the R5C's shutter speed mode to "speed" and set the same speed on the two cameras (e.g. 1/50th).
If you want to work in angle on the R5C, then you have to calculate the actual speed for the R5. To do this, the shutter speed's denominator = (360 / shutter_angle ) * frame_rate. So if the R5C is set to 144° and is at 24 FPS, then 360/144 * 24 = 60, so you'd set 1/60th on the R5 to match it exactly.
In cases where you can't match it exactly (1/48 on the R5C v. 1/50th on the R5) the difference is so small it won't be noticeable.
Actually, I'm currently working on a couple of videos that will dive into shutter speeds, especially the shutter angle system in more depth. They should be publishing in early January.
@@PointsInFocus that’s very helpful. Thank you. Looking forward to the vids👍🏻
So in Angule the shutter mode will automatically adapt??? for example if I use Slow & Fast Motion at 60 FPS... the shutter will go to 120? Am I right or not... please correct me if not... Thank you for the video great material.
Yes, in angle mode the shutter speed changes when you change the frame rate.
I'm getting noticeable flicker from my lighting in my household. When I use the GH5 shooting at 60fps limited it. Usually I change the shutter angle. Is there any other tips?😊
Wow you answered my question... I freaking love your videos
Jason please tell me you know how to program the dials for shutter and aperture automatically without having to press the function button!!!!!
You can set the aperture and ISO to direct dial control on the page 4 of the System Setup menu.
Unfortunately, shutter speed can't be mapped to any of the dials.
I think this stems from the shutter speed not being something that's changed frequently changed in the cinema/pro video contexts that the Cinema EOS OS was designed for. In most instances it's fixed at 180° (the reciprocal of the frame rate) and exposure is adjusted with ISO, ND, and aperture.
In the menu of my R5C, there is no “slow” option under “shutter mode”. Do you know why and how should I set it to able to use slow mode? Thanks
Slow is not available when the camera is set to Slow and Fast motion recording, or "Run VF at 2x Speed" is set to on.
@@PointsInFocus Thank you so much! Problem solved! I do set VF 2x Speed, and that’s why I cannot use Slow Shutter mode.
I need help. Canon R5 manual mode my shutter wont go faster the 1/30. What setting do i fix?
Off the top of my head, I'd start by checking the "Set Shutter Speed Range" setting on the Custom Function 2 menu page, and make sure the high setting isn't limited (it should be set to 8000).
If that's not the case, save your camera settings to a card (Save/Load cam settings on card on the Set Up 5 menu page), then reset the camera's settings using the Reset camera function on the same page (do both the basic and custom functions under other settings). If that doesn't fix the problem, you can restore your settings by loading them from the card again.
Edit to add: I'm assuming when you say R5 here you're talking about the actual R5, not the R5C. I'm just clarifying since this was an R5C video.
@@PointsInFocus Thank you. That was it! Fixed.
Awesome. Glad that worked.
I'm getting confused about clear scan still. I ended up calling Cannon and asking about clear scan. The rep told me I should double my Hz to match my fps set in camera. I watched a video about clear scan and Canon and the guy said clear scan automatically works and removes the flicker. I believe I am getting some conflicting information.
The Canon rep telling you to use a Hz that's double the frame rate is just them telling you to use the equivalent of a 180° shutter angle. Yea, that's where you should start, but that's not the end of the setting. And if you're just doing that, there's no point in using clear scan anyway, just use shutter speeds or angles.
As for clear scan working automatically... I've never seen it in testing, and I can't reproduce it. Clear scan simply lets you set the shutter speed in very fine increments (fractions of a Hz), to match the flicker rate of the ambient lighting. That said, I can see how someone might interpret it that way if they're shooting any NTSC frame rate under 60 Hz lighting (or any PAL frame rate in a 50Hz country). There's inherently a fairly large margin before flicker starts becoming noticeable. But if you're shooting under those conditions you shouldn't have noticeable flicker even without using clear scan.
If you really do need to use clear scan, the procedure is to set the Hz (shutter speed) to double your frame rate. Then fine tune the shutter speed up or down from there to eliminate visible flicker. If you're working under PWM controlled LEDs, this may require a significant deviation.
At least that's what I've seen in my testing.
@PointsInFocus thank you so much I searched clear scan into google. The only video that came up was from Carlos quintero. He makes a lot of UA-cam videos about filmmaking. So I asked him to reiterate and he says it works automatically again with not much of an explanation. I am guessing but your assessment seems right. I am shooting with Philips hue LED bulbs I'm not sure if they are the kind you mentioned. I will have to do some further experimentation on my end. I want to shoot in 24 FPS and usually when I do I get an annoying flicker from the hue light bulbs. If I shoot in 60 FPS it's usually not much of an issue. It's more on slow motion shots that the issue persists and makes the video in usable.
@@PointsInFocus I'm also confused about the system frequency. If I'm changing frame rates in the video mode why would I need to change my system frequency? I'm really sorry for asking you so many questions
System frequency controls whether you have NTSC (this is the 59.94Hz system frequency) frame rates (23.976, 29.97, or 59.94 FPS) , PAL (50 Hz system frequency) frame rates (25 or 50 FPS), or true 24 FPS frame (24 Hz system frequency).
That said, I think you're kind of barking up the wrong tree here trying to fix LEDs that aren't video safe. Phillips hue LEDs are PWM controlled. Though I don't know what PWM frequency they use. However, most commercial lights like that run in the 500-1000 Hz range, which makes them a flicker nightmare. It's too slow to be flicker free, and they're not designed to be even multiples of 24, 30, or 60 FPS so you can't bank of getting a consistent number of pulses per exposure.
Worse, there is no commerical standard that I'm aware of, so lights from different brands wont run at the same PWM frequency, so you can stop one from flickering only to have another start.
If your using Phillips Hue lights as practicals, replace them with either Aputure Accent B7C lamps or Aputure Amran SM5C strips (or something similar from an actual video lighting company). They're designed for video work, so they don't flicker.
@@PointsInFocus thank you so much. I'm going to copy this information down. I ended up with a light strip, two play LED bars and six color light bulbs all by Hue when they first came out. I wasn't planning on having any production value for my videos at that time. Also I was unaware of the flickering issue. I use godox and aperture lights for my key and fill. I was using the hue lights to create a more colorful background. It makes a lot of sense what you saying about these bulbs being different frequencies. Probably why I'm having such a difficult time. I adjust and then the other type of light is flickering. I'll have to find another solution to color the background of my office. I will check out the lights that you mentioned.
The reason to turn shutter speed off is for VFX
Can you elaborate?
@@PointsInFocus probably because of rotoscoping more sharpness each frame thanks to the faster shutter @360
The problem is a 360° shutter angle produces the most motion blur possible not the least. A shutter angle of 360° is an exposure time equal to the frame time. If you want the sharpest possible image for rotoscoping, you need to use the fastest possible shutter speed not the slowest.
And this is ultimately why I asked the question in the first place.
To my mind, for compositing and rotoscoping, I want the least amount of motion blur to make that process easier; which means I want a shutter angle near 0° (which can't be achieved as that would be an infinitely short exposure time), not 360°. If I'm not concerned about the motion blur, then I want to use a shutter speed that produces the motion blur similar to what I'd other wise you'd expect to see other wise (e.g. around 180°).
still, no 172.8 angle
172.8° is equal to 1/50th of a second when shooting at 24 FPS, which is supported as I noted.
@@PointsInFocus I think you should investigate some more about 172.8. Ask arri.
I'm sorry, but I'm not quite sure what I'm missing here.
Your assertion was that the R5C doesn't support 172.8°, which is incorrect. It does as the angle equivalent of 1/50th or 1/100th at frame rates where that's applicable (24 and 48).
Secondly, the purpose of 172.8° is to prevent flicker when shooting at 24 FPS in countries with 50 Hz AC power.
When dealing with AC power driven flicker, the actual exposure time is what matters. Specifically, the exposure should be equal to an integer number of flashes. In a 50 Hz country, a flickering light (such as HMI) will flicker twice per cycle, or 100 times per second. As a result, your exposure needs to be 1/50th of a second to get 2 flashes, or 1/100th of a second to get one. Any other exposure times will result in fractional cycles being captured, which will result in changing brightnesses from frame to frame and/or within the frame.
Because the shutter angle is tied to frame rate, this specific angle (172.8°) isn't relevant at frame rates where it doesn't correspond to an exposure time of 1/50.
For example, at 30 FPS, 172.8° corresponds to 1/62.5 (360/172.8*30). This doesn't prevent flicker anywhere or give you a meaningful difference in exposure from 180° (1/60), so it's not selectable.
If you're shooting at 25 FPS, which would be the "standard" frame rate for 50Hz countries, then you'd use a shutter angle of 180° (1/50). 172.8° at 25 FPS would be 1/52.083 which would cause flicker with 50Hz lights, and again not provide a usefully different exposure.
Technically 172.8° also applies to multiples of 24 FPS, such as 48 FPS. On the R5C, 48 FPS can be selected in slow and fast motion mode, and 172.8° is also available there as well.