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  • 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 :)

Issues Tracking or Keying Red Footage?

A trained professional (can't say who just yet) did some green screen tests yesterday. We loved what we saw.

Jim
 
Thanks for the update/tease, Jim. :)
 
Jeff Kilgroe said:
It will be tested. Tracking and integration are primary on the FX test list and we'll be shooting both indoors and outdoors. Or at least that seems to be the general plan (if what we have could really be called a plan at this point).
Click to expand...

A large part of the value of RED for my particular needs rests in being able to do 3D tracking and bluescreen/greenscreen. We've know for many, many months how good the RED will key and here I have ultimate faith. The tracking issue is still an unknown and I admit to a bit of personal trepidation until the details emerge.

I have my fingers crossed, my toes crossed, and anything else I can cross with great hope.

I look forward to the test results from all you 3D tracking guru's on the team.
 
Jim Arthurs said:
A large part of the value of RED for my particular needs rests in being able to do 3D tracking and bluescreen/greenscreen. We've know for many, many months how good the RED will key and here I have ultimate faith. The tracking issue is still an unknown and I admit to a bit of personal trepidation until the details emerge.

I have my fingers crossed, my toes crossed, and anything else I can cross with great hope.

I look forward to the test results from all you 3D tracking guru's on the team.
Click to expand...

Yes, the sooner we know the better. I have a mo-cap studio that wants
to shoot a feature with the RED. I have a meeting next week. These guys
have already been there and done that with TV and feature credits. It's fun being a tease!
 
Jim Arthurs said:
I look forward to the test results from all you 3D tracking guru's on the team.
Click to expand...

I was hoping to do a few tests and post them but today's the day I chose to install Adobe CS3 Production Premium, and it's so nervous about installing itself that it's taken eight hours to get my machine back. Anyway, I eventually did some tracking of the Jackson footage with Matchmover. Even at 1K, it's a one-click solve. Simple, simple, simple.

I was going to do some fancy stuff, and put Balrogs and Nazgul in the background and post it here, but then I was reminded about copyright and decided I have better things to do with my time than annoy Peter Jackson.

Suffice it to say, every test I've done indicates that 3D tracking and keying work perfectly with Red.
 
As far as I've understood a rolling shutter produces results like a film camera, so I think the answer to the thread's question should be clear.
 
kalone said:
As far as I've understood a rolling shutter produces results like a film camera, so I think the answer to the thread's question should be clear.
Click to expand...

No, not at all! They are different!!! At least when comparing film to the HV20-ish rolling shutter typle we're coming to know...

As I posted earlier in this thread, a film camera exposure has a period where slew can happen, a period when it can't, then a final period when the shutter closes where it can. Here's an animation I did to show the effect. The animation shows a thin horizontal object falling through the FOV in a single frame's time to exand the example... a worst case scenerio.

http://ftp.datausa.com/imageshoppe/outgoing/SHUTTER_STUDIES/FILM_SHUTTER_SKEW_CLASSIC.mov

In practice, the slew portions will be softer as the shutter is not in the plane of focus, and different shutter designs have different angles of attact to the gate, but they all have the same three phases.

A CMOS rolling shutter similar to the HV20 simply starts triggering running down the image from top to bottom with no period where the image is stable. Anders did a very good animation showing the differences...

http://www.reduser.net/forum/showpost.php?p=47000&postcount=3

Obviously the RED isn't the HV20, but this whole issue is my ONLY concern about the RED at this point, and a concern that 95% of the people using the camera wouldn't (and shouldn't) worry about. However, based on my desired use of the RED, I can't help the fact that it is a concern that I await testing on...
 
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