I'm just curious why do you want to adjust the shutter speed for video recording what is the point since the mirror is always up when recording so shouldn't aperture and ISO the only two adjustment needed here? not like the shutter would flip up and down continously while you're recording video anyway...
I'm not a videographer but it's the same as with photography.
Imagine a Video of falling (rain-)drops. At 1/30s every single frame in the video will be blurred. At 1/1000s every single frame will be sharp and the video will look much better.
Same goes for intended motionblur but you want longer exposures then.
simon_k wrote:
I'm not a videographer but it's the same as with photography.
Imagine a Video of falling (rain-)drops. At 1/30s every single frame in the video will be blurred. At 1/1000s every single frame will be sharp and the video will look much better.
Same goes for intended motionblur but you want longer exposures then.
what you described suppose to be affected by fps, not shutter speed. capturing video ain't exactly the same as still photo.
yauyi wrote:
what you described suppose to be affected by fps, not shutter speed. capturing video ain't exactly the same as still photo.
well, not that I have a 5D2, but I can easily imagine 30 frames of images taken at e.g. 1/250s making a nice sequence. As long as the Tv doesn't drop below 1/fps, everything goes, right?
yauyi wrote:
what you described suppose to be affected by fps, not shutter speed. capturing video ain't exactly the same as still photo.
both not quite right
it is the shutter speed that will make the raindrops look frozen in time or not, nothing at all to do with the fps (other than you can't even get them more blurred looking than the speed 1/fps), but OTOH, going to a higher shutter speed doesn't necessarily make the video look better, it can often make it look choppy and sort of staccato, although sometimes this works well for an special look and other times all that matters is that the individual frames are frozen.
and in film motion picture cameras they do have a mechanical thing that controls shutter speed and it does work many times a second, although it is nothing at all like the design of a shutter in a still camera.
simon_k wrote:
I'm not a videographer but it's the same as with photography.
Imagine a Video of falling (rain-)drops. At 1/30s every single frame in the video will be blurred. At 1/1000s every single frame will be sharp and the video will look much better.
Of cours if yo place the camera on a running 6 liter V8 engine it will also be blurred
What I wanted to point out is that if you take 30 pictures in one second the effect of the shutter speed is not really different compared to normal photography. It's just much quicker and the "slide show" is also a bit faster
The shutter speed in video cam simply does not make sense, if the cam is capable of capturing 30fps, and that's 1 still picture for every 0.033sec! then how is shutter speed going to factor into stopping motion and affect the smoothness or choppiness of the video clip regardless of the shutter speed the video is still being limited to only 1 frame per 0.033sec, I'm not sure how shutter speed going to work in our 5D2 but I suppose this virtual "shutter speed" has to be capped somewhere and can't go too low otherwise I don't see how the 5D2 is able to crank out 30fps if you set 0.5sec shutter. so in this case, since the 5D2 is constantly pumping out 30fps, isn't it pointless to adjust the "shutter speed"?
simon_k wrote:
Of cours if yo place the camera on a running 6 liter V8 engine it will also be blurred
What I wanted to point out is that if you take 30 pictures in one second the effect of the shutter speed is not really different compared to normal photography. It's just much quicker and the "slide show" is also a bit faster
No I am not talking major vibration. Do a normal landscape pan at 1/1000s shutter speed or at 1/60s and compare how fluid they look.
(Make sure your live view is setup for stills + movie and movie display).
Basically, two ways.
1 - Using AUTO ISO. If you're using Auto ISO, the camera will always try to get to what it considers a good exposure, it'll always try to get to 0 EV. Even if you turn the apeture way up or down, you'll see the ISO jump all over the place as it is adjusting to the changing level of light input as you move around. It's kinda like running the camera in auto mode while shooting a movie. If you turn the big wheel on the back, it adjust the ap, the top wheel changes the shutter speed, it picks the ISO but it'll always try to get a "good" exposure by adjusting that ISO. In this mode, it will only automatically go up to ISO 6400.
2 - Selecting the ISO you want. If you pick the ISO you want, you can then control the exposure level, plus or minus, by changing EITHER the shutter speed value or the apeture value since the ISO remains constant, just like you would do when taking a picture. It will show you on the screen if it thinks you are recording video at too high or too low of an exposure, the shutter speed from 1/30th on up, ISO up to H1, and apeture from its min to its max. Basically this is the full manual mode.
yauyi wrote:
The shutter speed in video cam simply does not make sense, if the cam is capable of capturing 30fps, and that's 1 still picture for every 0.033sec! then how is shutter speed going to factor into stopping motion and affect the smoothness or choppiness of the video clip regardless of the shutter speed the video is still being limited to only 1 frame per 0.033sec, I'm not sure how shutter speed going to work in our 5D2 but I suppose this virtual "shutter speed" has to be capped somewhere and can't go too low otherwise I don't see how the 5D2 is able to crank out 30fps if you set 0.5sec shutter. so in this case, since the 5D2 is constantly pumping out 30fps, isn't it pointless to adjust the "shutter speed"?...Show more →
You can't have slower than 1/30 shutter at 30fps but you can have faster. For example at 1/60 after the 1/60 exposure there is simply a 1/60 gap where the frame is not exposed before the next frame start.
(Make sure your live view is setup for stills + movie and movie display).
Basically, two ways.
1 - Using AUTO ISO. If you're using Auto ISO, the camera will always try to get to what it considers a good exposure, it'll always try to get to 0 EV. Even if you turn the apeture way up or down, you'll see the ISO jump all over the place as it is adjusting to the changing level of light input as you move around. It's kinda like running the camera in auto mode while shooting a movie. If you turn the big wheel on the back, it adjust the ap, the top wheel changes the shutter speed, it picks the ISO but it'll always try to get a "good" exposure by adjusting that ISO. In this mode, it will only automatically go up to ISO 6400.
2 - Selecting the ISO you want. If you pick the ISO you want, you can then control the exposure level, plus or minus, by changing EITHER the shutter speed value or the apeture value since the ISO remains constant, just like you would do when taking a picture. It will show you on the screen if it thinks you are recording video at too high or too low of an exposure, the shutter speed from 1/30th on up, ISO up to H1, and apeture from its min to its max. Basically this is the full manual mode....Show more →
Indeed. Which once again shows that Canon thinks things 90% thru: adding Av would have been ah so difficult...
yauyi wrote:
The shutter speed in video cam simply does not make sense, if the cam is capable of capturing 30fps, and that's 1 still picture for every 0.033sec! then how is shutter speed going to factor into stopping motion and affect the smoothness or choppiness of the video clip regardless of the shutter speed the video is still being limited to only 1 frame per 0.033sec, I'm not sure how shutter speed going to work in our 5D2 but I suppose this virtual "shutter speed" has to be capped somewhere and can't go too low otherwise I don't see how the 5D2 is able to crank out 30fps if you set 0.5sec shutter. so in this case, since the 5D2 is constantly pumping out 30fps, isn't it pointless to adjust the "shutter speed"?...Show more →
If you really want to know why this guy has a great write up on it, His user name is Retinal Fetish and he has a thread response on this page about 3 or 4 posts down from the top. http://www.modelmayhem.com/po.php?thread_id=455796&page=2
yauyi wrote:
The shutter speed in video cam simply does not make sense...since the 5D2 is constantly pumping out 30fps, isn't it pointless to adjust the "shutter speed"?
Using shutter speed to adjust exposure levels allows the videographer to use aperture to control depth of field.
While a camera shooting at 30fps can't have a shutter speed slower than 1/30 second, it can have one that's faster.
Glad that Canon made this update - it works perfectly fine, just installed it and tested the video performance in M mode.
I feel a bit sorry for all the guys who went out buying alternate manual lenses for their 5D II cameras in the recent months to allow better control of apertures in the video mode. Now it works so fine with the nice Canon (L) lenses....
I'm glad that Canon did this as well. I never really found much interest in the video feature on the 5D2. I only used it to see if it worked. This adds a dimension that makes me want to experiment with it a bit more.
BrianO wrote:
Using shutter speed to adjust exposure levels allows the videographer to use aperture to control depth of field.
While a camera shooting at 30fps can't have a shutter speed slower than 1/30 second, it can have one that's faster.
Hmm. It's unfortunate that we can't shoot slower than 1/30th. I actually shoot my HD cam (720/60p) at 1/15 and 1/7.5 for effect, to raise the ambient light level on a dark and static scene, or to eliminate computer screen flicker.
With any professional video camera, it is not a good idea to shoot at shutter speeds higher than 1/60 under fluorescent lights as you will have a noticeable roll on your white balance. I'm assuming it is true of the 5DmkII. Can anyone vouch for this??
what is the point since the mirror is always up when recording so shouldn't aperture and ISO the only two adjustment needed here? not like the shutter would flip up and down continously while you're recording video anyway...
so in this case, since the 5D2 is constantly pumping out 30fps, isn't it pointless to adjust the "shutter speed"?