EX-1 camera test with Camera Flashes

semila58 said:
The EX1 is going to be my next purchase for narrative work, so the flash issue isn't an issue for me so much. But now I'm curious. What effect does recording in 60p for slow motion in a 24p timeline do? Do you still wind up with half frames? Forgive me if that's a stupid question.
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if you shoot 60p and slap it on a 24 time line, you get a very video-like, smooth, 60 frame image that is NOT slow motion ... With the EX-1, to achieve slow motion, you have to shoot 720/24p and in the SLO&FAST MOTION (or labeled something similar) option, change the frames to 60 ... simply shooting 720/60p in your settings WON'T give you slow motion when you drop it on your timeline. Some might say it's a bit of a hassle because the options are not right next to each other, but whatever, takes two seconds and doesn't require a lengthy camera reset.

and to answer your question about what it looks like in slow motion, please re-watch the video to answer your own question ! :grin:
 
So Mico, would I be right in that you are not just trying to somehow match the exposure that's on one half of the frame and bring it to the other half, but you are introducing a completely new light source in the same place as the original flash , so the image now has a new source - a new point of blinding intensity and new light that now illuminates the whole frame - basically just overwhelming the previous exposure so you don't even notice it anymore.

If so that sounds like a dandy and very easy workaround - Kudos man! What a fine solution !

Lenny Levy
 
Lenilenapi said:
So Mico, would I be right in that you are not just trying to somehow match the exposure that's on one half of the frame and bring it to the other half, but you are introducing a completely new light source in the same place as the original flash , so the image now has a new source - a new point of blinding intensity and new light that now illuminates the whole frame - basically just overwhelming the previous exposure so you don't even notice it anymore.

If so that sounds like a dandy and very easy workaround - Kudos man! What a fine solution !

Lenny Levy
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Exactly Lenny. You create a whole new source that can match exactly whats being filmed.

I saw this today and was wondering if they used Knoll for this. There are moving shots in this besides being very funny. For those that are easily offended I apologize.

http://www.youtube.com/watch?v=J310...ickmonkey.com/2007/12/05/greenpeace-sunshine/
 
dandobi- thank you for the clarification. I haven't worked at all with variable frame rates on a camera yet, so I figured I may not be explaining the intended process right. If I'm correctly capturing a frame rate for slow motion, the chips still exhibit the same rolling shutter effect to some degree? Am I to understand correctly that if I wanted to capture an actual lightning strike that I could not in any way do this on the EX1? As I said, not a huge deal for my purposes, but still I'm curious. Reviewing the aforementioned clip to help answer my last question!:beer:
 
mico said:
Exactly Lenny. You create a whole new source that can match exactly whats being filmed.

I saw this today and was wondering if they used Knoll for this. There are moving shots in this besides being very funny. For those that are easily offended I apologize.

http://www.youtube.com/watch?v=J310...ickmonkey.com/2007/12/05/greenpeace-sunshine/
Click to expand...


I just consulted my proctologist about this, and he confirmed that 3% of theses people did not use Knoll. He warned against trying this at home as well.
 
I don't think this problem with photo flashes is all that severe, but it IS an indicator that other types of flash events can appear somewhat problematic.

I shoot fireworks displays in the summer. And the first time I shot with a CMOS was last July. With continuous flashing explosions, the rolling shutter was pretty obvious--because of hundreds of flashes in a space of a few seconds. But it paled compared to the block artifacts from an overloaded HDV CODEC. The blocks bother me more than the partial frames.
 
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