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Freshman
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Posted
I have a canon GL2, and as many of you know, it has a ****ing HIGH shutter speed....now, if I were to place what I was shooting in ****ing BRIGHT light...and then shoot it, what should I expect after slowing it down in post?

THe framerate would be 29.97, so wouldn't I be limited to that? Would I have to change the framerate so that I capture more frames? Is that even a viable option? Should i not bother doing high quality slow-mo on this type of camera? Just help me better understand this.

For instance...the normal shutter speed i have it on is about 1/60, or 1/120....let's say, I wanted to capture a fast car crash (hypothetical). Now, I get some gooooood lighting, and shine it where it needs to be, and then set the shutter speed to 1/15,000. Now, the lighting, if it's good enough will allow me to see SOMETHING...so I record...get an awesome shot.

Now, will I be able to take that in post AT ALL and then slow it down so I get great ****ing detail, or would I have to change the camera framerate instead, forcing me to rely on some modified technology, or a plain old film camera?

Thanks.
 
Posts: 54 | Location: Seneca Falls, NY, USA | Registered: November 03, 2002Reply With QuoteEdit or Delete MessageReport This Post
Freshman
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Well, if your working with a digital video camera, you are limited to 29.97 FPS ALL the time when shooting. However, if you want to know how to adjust the lighting in shots that are done with higher shutter speeds, the best way to do it other than simply lighting the shot more, you can adjust the Fstop or in other words, how far open the iris is.
Just like in basic still photography when you want to capture a high action shot with minimal amounts of blurring, you will first of all get a fast speed film, and then adjust your shutter speed to acomadate the film speed, and then adjust the Fstop to acomadate the shutter speed so that your shot is not underexposed...but then again, as you push for a bigger iris opening with a faster shutter speed, your image becomes more grainy......
sorry i got off subject but anyway, there should be a button that ajusts that on your camera...im not familiar with the Gl series so I really couldn't tell you. All i know is that mine has an exposure button that does the same thing.
Another thing to consider if you are moving in the direction of slo-motion is progressive scan technology. This will eliminate mismatched fields in your frame where fast motion usually creates them. This will give you a more film-like look as well. However, like I said before, im not familiar with the GL series so, im not sure if you camera even has that feature...but it's something to consider if it does..

Wylie Earnhart
 
Posts: 15 | Location: Mercer, PA, USA | Registered: December 02, 2002Reply With QuoteEdit or Delete MessageReport This Post
Alumnus
Picture of TizzyEntertainment
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Ok, increasing the shutter speed will do nothing for you, as far as slo mo goes. You would need to increase the frame rate, which you cant. I believe the only video sourced camera that does slo mo is the Pani Varricam HD. Of course, that an $80,000 camera (and HD) In the end you will have 29.97 frames. Now I have heard your best bet is shooting in 60i (60 interlaced frames= 30) Because you have two layers to draw from (as opposed to 30p, or movie mode)

Now I have seen some pretty good slo mo done with morphing programs. The idea is, you slo down the footage, de interlace, and then morph from one movment to the next. With the right formula you have smooth slo mo. The only problem is sometimes if someone is running quickly through the frame, it tends to warp the background as well. Some kids did super extreme slo mo (matrix style) for their feature. They made sure to shoot a clean back plate so they could roto scope out the old background, and place the person over that frame (result, no warping) You can check out their trailer at www.schoolis2die4.com Sorry I cant be of more assistance.
R. Michael

"Luck, is when opportunity, meets preperation." "There are 3 sides to every story. Yours, mine, and the truth, and none of us are lying" -Robert Evans
 
Posts: 1534 | Location: WPB, Florida | Registered: November 22, 2002Reply With QuoteEdit or Delete MessageReport This Post
Freshman
Picture of padawanNick
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Shutter speed on a video camera only designates the amount of time the CCD(s) actually collect light during each frame. More light while make individual frames more clear and reduce motion blur, so it does help, but won't actually let you shoot slow motion.

One thing to do is shoot in Interlaced mode rather than full frame. This way you actually capture about 60 fields per second, and most video editing programs will let you deinterace these to generate 60 frames per second. You loose half your verticle resolution, but it's generally not a bad compromise.

There's also a program from Dynapel called Motion Perfect that helps generate smooth slow motion from standard video.

Good luck.
Have fun.
 
Posts: 40 | Location: Philadelphia, PA | Registered: November 05, 2002Reply With QuoteEdit or Delete MessageReport This Post
Freshman
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I was pretty sure the framerate would be the thing i'd have to change...but I was just hoping maybe I was wrong....lighting isn't a problem...i was just hoping to get a good slo-mo, oh well...it's not that important..but the morphing thing sounds good...I thought about that a bit, and maybe I'll try it...Thanks
 
Posts: 54 | Location: Seneca Falls, NY, USA | Registered: November 03, 2002Reply With QuoteEdit or Delete MessageReport This Post
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