exposure length

[dVonAllmen]

Suppose for whatever wacky reason i wanted to shoot at 4 fps but have each frame be exposed for 1/4 of a second to create extreme blur and play back real time (i.e. not sped up) - is this possible?

Sorry if the answer to this is posted elsewhere, I searched and couldn't find it.

thanks. David.

[Omnius]

Suppose for whatever wacky reason i wanted to shoot at 4 fps but have each frame be exposed for 1/4 of a second to create extreme blur and play back real time (i.e. not sped up) - is this possible?

Sorry if the answer to this is posted elsewhere, I searched and couldn't find it.

thanks. David.

I like where your going with this. . . .

[brandon herman]

I think it's really just a question of shutter speed to achieve the blur. And I'm pretty sure you can slow the shutter enough in camera.

In terms of playback, RedCine might allow you to do this, but I'm not sure. It may try to play it at 24fps, and everything would look kind of fast/timelapse.

Worst case scenario fix:

Open the clip in RedCine, output the clip as individual still frames.

Go into Adobe After Effects, and import the sequence of stills.

It will ask how long you wish each 'still' to be displayed for.....1 frame, 10 frames, etc. I think you can even tell AE to overlap and cross dissolve the frames for a certain length of time.

So tell each still to be on screen for 6 frames, and your sequence will play in real time (assuming you want 24fps). (Or tell it to be 8 frames, with a two frame overlap, etc....)


Please correct me if I am wrong on any of this. Thanks!

[dVonAllmen]

I know there's a number of ways to take one frame and turn it into six so that something shot at 4 fps plays back at normal speed, but you couldn't get the blur effect in post, it has to be on the "exposed negative" to begin with.

So, yes, it's shutter speed that I'm wondering about.

[Andrew Walker]

All I want it to have is the ability to do exposures longer than a second on each frame. I'm sure I could do some kick ass timelapse in the day. But at night I need those long exposure times for the light to look right. Maybe one day RED will have that in an update or I'll just have to keep using my 40D to do timelapse with.

[brandon herman]

I guess an advantage of using a DSLR is that you can set your exposure to almost anything, from 1/24th, to 30 seconds, to three minutes....

(I heard people do 10 minute exposures in astro-photography, to get star-streaks.)

Using the remote, you can have it take as few as one photo per day, or maybe even less often than that.

I often set mine to 1/30th, taking a pic every 45 seconds. I've done this for an EPK, watching the film crew set up a shoot.

Then, stick your small and light DSLR on a $50 Gorillapod and attach it anywhere.

http://www.bhphotovideo.com/bnh/controller/home?shs=gorillapod&ci=0&sb=ps&pn=1&sq=desc&InitialSearch=yes&O=RootPage.jsp&A=search&Q=*&bhs=t

[Andreas Hellebust]

Yeah this should be a priority. I tweaked my HVX200 to be able to do 2 FPS, and even though I did it for fun, I've actually run into a surprisingly high amount of shooting scenarios where I couldn't have made it without this function. Hopefully, the Red could use the slower shutter times to let more light to the sensor too.

best of luck, Andy (and happy holidays!)

[ColinSmith]

Shoot at 24fps with a 360 degree shutter, then blend images in post to get the the apparent frame rate and exposure time that you want all within a 24fps stream.