8mm Forum: Simple transfer with Canon T3i and Pageant TV-12M6

»	8mm Forum » 16mm Forum » Simple transfer with Canon T3i and Pageant TV-12M6 - rolling bar, advice?

UBBFriend: Email this page to someone!

Author

Topic: Simple transfer with Canon T3i and Pageant TV-12M6 - rolling bar, advice?

Robert Stewart
Junior
Posts: 5
From: USA
Registered: May 2013

posted May 04, 2013 03:35 PM

Hi all.

I'm looking to do a 'quick & dirty' telecine transfer from an archive of 16mm films with my T3i. Just projecting the image on a screen (using a Kodak Pageant TV-12M6 telecine model) and then recording the projected image directly.

Unfortunately, with the T3i I'm getting the "rolling bar" effect - faint dark bars slowly rolling up the screen. It was my impression that the Pageant TV models are specifically designed to prevent that. Changing the camera's framerate, shutter speed, iso, etc, can reduce the severity a bit but doesn't seem to eliminate the bars far as I can tell.

The folks I purchased this projector from suggested it may be an issue with the camera. I did test it with a couple other cheaper cameras and indeed there was no rolling bar present - though their images were far inferior to the T3i and it's possible not sharp enough to reveal the bar (for example, tried a Vixia HF R42, which was comparatively atrocious).

So, my questions are - anyone else tried basic telecine with Canon DSLRs? Any tips for fixing the above effect? Or at least anyone know why these bars would be visible only on this particular model of camera, considering framerate is the same across all of them?

Any advice would be much appreciated.

| IP: Logged

Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011

posted May 04, 2013 04:28 PM

Do you have your camera video set to 60fps?

--------------------
Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

| IP: Logged

Vidar Olavesen
Film God

Posts: 2232
From: Sarpsborg, Norway
Registered: Nov 2012

posted May 04, 2013 04:46 PM

My ST-1200HD MO has a switch 50/60Hz ... Any such thing on the Pageant? If it's set to 50 and you record at 60, that would make this happen I think

| IP: Logged

Robert Stewart
Junior
Posts: 5
From: USA
Registered: May 2013

posted May 04, 2013 07:36 PM

Thanks for the responses guys!

Janice - I've tried at 1280x720 60fps, and at 1920x1080 24fps & 30fps. All result in the rolling bar.

Vidar - There's no toggle as far as I'm aware, though the projector's front-plate does say "120 VOLTS 60 Hz" so I'm going to assume it's running at 60.

Here's a snapshot of the projector: http://i.imgur.com/O7xKz7N.jpg

And here's a quick clip of the bar effect, the faintest I've been able to achieve but still noticeable especially after you've been watching for a while (ignore the rest of the quality issues, just recorded this to exhibit the problem): http://videobam.com/RnuwB

Any thoughts?

| IP: Logged

Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011

posted May 04, 2013 08:59 PM

I don't know if you bought the projector from The Projector Workshop...but since they did the telecine mod on the machine...they should know what setting you will need to sychronize with your camera. Maybe there is a speed adjustment inside the projector...maybe needs new builts?

--------------------
Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

| IP: Logged

Robert Stewart
Junior
Posts: 5
From: USA
Registered: May 2013

posted May 04, 2013 09:17 PM

They've been mystified as well. I should note that the Pageant "TV" model was originally designed with telecine capability, far as I know Projector Workshop just serviced it rather than doing a full mod.

There's no speed adjustment. However I did use a variac to slow the speed down slightly, though this had zero effect on the rolling bar.

Again it seems to be a camera-specific issue, as a couple others I've borrowed recorded the image just fine without the distortion. But I'd *really* like to get it working properly with my camera, as otherwise the picture is much much better than the others I tried.

| IP: Logged

Jack Crowe
Junior
Posts: 3
From: Brooklyn, NY
Registered: Apr 2013

posted May 14, 2013 10:41 AM

Hi Robert,

Have you tried Magic Lantern?
Its pretty easy to install on your Camera/card,
You can then adjust the frame rate, In the FPS Override setting,
I've had some good results, you have to play a bit to get it just right,

| IP: Logged

Barry Fritz
Phenomenal Film Handler