Welcome to our community

Be a part of something great, join today!

Log in
  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

undercrank 360˚

J

Jose Poernomo

Well-known member
Joined
Oct 24, 2007
Messages
91
Reaction score
0
Points
0
Location
Jakarta
Is it possible to undercrank, say 10 fps, and have 360˚ shutter ?

I didn't see the menu provide such, did I miss something ?

thanks
José
 
While we're on the subject, does anyone know how to create the smeared slow shutter look used in the beach sequence in Saving Private Ryan as well as the opening battle in Gladiator?

I'm trying to figure out the right combination of shutter speed, frame rate, and post playback speed.
 
Jose,

Biba is right that timelapse can do slow fps. Another possibility for slow fps and long exposure times is as follows:

select "shutter" under the sensor menu - set speed to 1/24 - go to "mode" set mode to "relative" - go to "varispeed" and check the varispeed checkbox - go to framerate - dial down the framerate setting to 10 and the shutter speed will follow the framerate down to 1/10 second which is then equivalent to approximately a 360 degree shutter. This works all the way down to 1 fps and 1 second exposure.

Works beautifully. Hope this helps.

David
 
David, do you have the hot pixel issue when you do a 1 second exposure?
 
Don Julio,
The scenes you are talking about don't have smear, they have high shutter speed strobing. Try a shutter speed of 1/96 or higher with normal frame rates: 24, 25.
 
I know the scenes were shot with a 90 and even 45 degree shutter. I'm talking about the moments when everything slows down, the sound is pulled away, and all of the movement is blurred. What camera settings would cause that?
 
Don Julio said:
I know the scenes were shot with a 90 and even 45 degree shutter. I'm talking about the moments when everything slows down, the sound is pulled away, and all of the movement is blurred. What camera settings would cause that?
Click to expand...

Do you mean the out-of-phase shutter effect? They used it in the operating-theatre scene in "Pearl Harbour" too. That's a film-camera-only effect I'm afraid - basically the shutter timing is slightly out of synch with the pull down of the film through the gate (the shutter isn't completely blocking off light from hitting the gate as the film's pulled down so you get a vertical smearing, which is more noticeable on highlights).
 
SF Geek said:
David, do you have the hot pixel issue when you do a 1 second exposure?
Click to expand...

SF Geek,

I definitely get the galaxy of hot pixels when at 1 second exposure which are very apparent when viewing in RedCine. After processing the footage, however, (I use CineForm (at 4K) to CS3) those artifacts completely disappear and I end up with entirely usable footage.

I can think of a number of likely reasons why the pixels are not visible after passing through the processing chain... for me right now I'm happy because I can generate this type of image and have it work well for my needs.

http://www.vimeo.com/1624587

for some examples
 
David Wilson said:
Jose,

Biba is right that timelapse can do slow fps. Another possibility for slow fps and long exposure times is as follows:

select "shutter" under the sensor menu - set speed to 1/24 - go to "mode" set mode to "relative" - go to "varispeed" and check the varispeed checkbox - go to framerate - dial down the framerate setting to 10 and the shutter speed will follow the framerate down to 1/10 second which is then equivalent to approximately a 360 degree shutter. This works all the way down to 1 fps and 1 second exposure.

Works beautifully. Hope this helps.

David
Click to expand...

Yes, this is the technique that I used to get the footage I shared in the Playing Around With Infrared on Red thread.

Don Julio said:
I know the scenes were shot with a 90 and even 45 degree shutter. I'm talking about the moments when everything slows down, the sound is pulled away, and all of the movement is blurred. What camera settings would cause that?
Click to expand...

There is a section of my video (InfrRED Testing.mov) that I shot at 1fps with 1 second exposure- then retimed it in the NLE to get it faster. There is a massive amount of smear in it and it makes for an interesting effect... even though it is far past the minor smearing that you are looking for, it shows you where to start dialling back from.
 
David, I love that look you just posted. Man I wished that would have been posted a week ago for this music video we are doing. I was having the dancers dance through the frame and I am going to try to do that effect in post but with still frames at certain intervals so they look frozen in time. I was trying to explain the concept but I was calling it onion skinning from the onion skinning button in Flash where it shows up to 20 frames at once so you can see the motion.
Oh well, going to have to get another music video quick... :)
 
Clint,

I know, I remember well. I'm sorry, I don't think I responded in any way when you posted your InfraRED Testing Movie but I thought both of the shots and the one shot especially was absolutely beautiful - completely splendid use and combination of effects.

David
 
bryanpapierski said:
dave
why set the shutter to 1/24 when you change the frame rate and the ss changes to 1/10.. also how do u figure out that 1/10 is a 360 shutter?

???
Click to expand...
Bryan,

My understanding is that at 24fps a 1/48th second exposure time is essentially giving you the equivalent of 180 degree shutter. If you then set the exposure time to 1/24th of a second you have doubled the exposure time or essentially given yourself a 360 degree shutter.

If then, with the shutter set to "relative" you dial down your fps to 10 the exposure time will follow and give you a 1/10 of a second exposure.

10 frames per second with 1/10 of a second per exposure really means that you are recording almost every microsecond you are running the camera - in other words with the shutter almost always open or almost 360 degrees.

This is a great thing. I remember working with a Mitchell Standard wanting to do just that but not being able to because the darn movement needed time to do its job.

David
 
You must log in or register to reply here.
Back
Top