Film-Tech Forum ARCHIVE: HFR 3D with Dolby 3D wheel

This is topic HFR 3D with Dolby 3D wheel in forum Digital Cinema Forum at Film-Tech Forum ARCHIVE.

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Posted by Mike Moreno (Member # 4887) on 11-26-2014, 09:45 AM:

Hi.
I have a Barco 23B with Dolby 3D wheel and GDC Sx3000 IMB.

GDC says that sx3000 cand handle HFR, and i guess it should not be a problem on the Barco, but what about Dolby 3D wheel?
you guys think i can show the hobbit?
I ask to our installers but they didnt say anything.

thanks

Mike Moreno
Mexico

Posted by Marcel Birgelen (Member # 6801) on 11-26-2014, 10:47 AM:

Yes, you can.

It will do double flash at 192Hz for 48 FPS and single flash at 120Hz for 60 FPS.

Be sure to ask for the 48FPS DCP and corresponding keys though, it might not be automatically included.

Posted by Carsten Kurz (Member # 5396) on 11-26-2014, 11:44 AM:

I didn't hear anything about a Hobbit HFR qualification process this year. Will the distributors use last years database, or will now anyone receive a HFR DCP who requires one?

- Carsten

Posted by Mike Moreno (Member # 4887) on 11-26-2014, 01:21 PM:

thanks guys

Here in Mexico, at least for us the distributor are asking who´s ready for playing HFR hobbit feature.

mike Moreno
[beer]

Posted by Marco Giustini (Member # 4544) on 11-26-2014, 03:11 PM:

I guess the software is now stable enough to assume that if you have an IMB you can run HFR.
The only issue may be with Doremi IMB and the alternative FW joke, which is not there by default and disappears when some main FW upgrades are performed.

Posted by Monte L Fullmer (Member # 2797) on 11-26-2014, 06:11 PM:

I have SX3000 units with Barco and played Hobbit RealD 3D HFR last year with no problems.

Just need your Barco system configured, like a macro assigned, as such for HFR.

-Monte

Posted by Steve Guttag (Member # 268) on 11-26-2014, 08:32 PM:

The added "fun" with a Barco and Dolby 3D is that the Dolby filter wheel does not auto-detect mode like with the DFC100 system. So it is essential that you have a macro for each 3D mode or your timing will be off. That is, you can't have a mixed show with conventional 24fps triple flash previews going into a 48fps double flash feature without also having a macro change.

Conversely, the DFC 100 can be set up for both modes and it will auto detect and sense the need to change the timing accordingly. Mind you, you'll be running 24fps stuff at double flash for that "film" look.

However, one can set up a Barco macro to JUST change the 3D mode...which is what I did for our Cinedigm site that ran Hobbit in HFR...all of the 24fps stuff (including 3D previews) will run in triple flash...and then with a simple macro will change mode on a 48fps "blank" clip. It actually happens quite seamlessly.

Posted by Marcel Birgelen (Member # 6801) on 11-27-2014, 04:15 AM:

You indeed need a macro to change between 3D modes, or else it will look rather... fun. I've seen shows where this macro was placed wrong (before the feature trailer). Most of your patrons won't appreciate the strobe effect you're feeding them [Wink]

.

Also, you should allow for a few seconds of delay between the switchover and the HFR feature, because the color wheel needs to adjust to the new rotation speed, unlike non-mechanical solutions like Z-Screens.

Posted by Mike Moreno (Member # 4887) on 11-27-2014, 10:30 AM:

thanks guy.

ill take a look on the macros.

Mike moreno
mexico