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 :)

Dragon has Strobe effect

S

SUNILPREM

Well-known member
Joined
Sep 26, 2010
Messages
309
Reaction score
0
Points
16
Hi I am having a big issue with my Dragon.If I do a slow pan also I get a Strobe effects.Any one have any idea about this issue,Please help me .Here I am sharing the video file also .
https://youtu.be/SMItUnWtHKU

Thanks
Sunil
 
Last edited:
Your link requires permission to view. best to share via vimeo or youtube.

Slow pans can be done several different ways. If shooting at standard 180 degrees, do them very very slowly on a tripod. I shoot a lot at higher speed or i will increase shutter speed slightly to avoid any stuttering or strobing effect. This is pretty 101 stuff so you may know it already and perhaps another issue is at play
 
Hi Johnny Thank you very much for your reply .Now I have uploaded youtube link.This video I shot with 180 degree shutter angle,24fps.but I feel the motion blur is not normal.


Thanks
Sunil
 
Thanks David.thanks for the link.I have used Video and Film cameras also.But Today I feel more than normal that's why I posted here.my time base is 24 .


Sunil
 
Last edited:
In the ASC manual there's a very nice and informative page on panning speed and the relationship between focal lengths and the duration of the move.
 
Sunil, this is called "judder" and has nothing todo with Dragon, and all todo with phsyics. Generally speaking, the longer the lens, the worse the judder (because the FOV is tighter). The rule @24fps is you need to pan across your entire frame in 7secs (generally) to avoid judder. Clearly on a tight shot this can be quite limiting.

A way around this is to shoot slowmo. Generally speaking we've found the more frames we shoot, the more we minimize judder. I wouldn't be surprised if there's a mathematical correlation - ie twice the slomo, reduces judder twice as much, but don't quote me on that.

But I hear you. We shoot a lot of long lens work (portraits, b-roll) and we've had to be very mindful of judder.

But again, it's math. Not the camera.

Good luck!!
 
Thank you all.Now I am little bit relaxed ,if this is a normal phenomenon I can relax more.Any way I had send the log file and footage to Red.waiting for there reply .Once again thanks a lot.


Sunil
 
FYI, if you have a moving subject in frame you can pan fast with them, the background judder will be not noticeable
 
Yes absolutely seconding what Jake said, further I've found that the level of detail in the shot is also important, so a moving subject with a high-detail background where they are near the background & DOF is deep enough can still exhibit judder if you look for it, while a shot with more subject-background separation and/or shallower DOF will be closer to completely non-noticeable.
 
You must log in or register to reply here.
Back
Top