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FCP 6 (or 5) won't clamp my reds!

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Deadhead
FCP 6 (or 5) won't clamp my reds!
on May 31, 2007 at 12:59:13 pm

I shot a project and lit and balanced it in camera heavily toward red on set knowing it could be clamped back to legal levels.

I had been waiting for Color since I knew it could knee the reds back to legal, and indeed a render through Color with no color correct did just that - make it legal , although I did seem to make the video a bit darker- is this a gamma shift issue cropping up from the old Final Touch days?

ANyway, after reading about the improved Broadcast safe filter in FCP 6 - It still wont clamp the color (the reds are at 120% - though the luma is now correct and has a nice knee function.)

But why can't they create a real broadcast safe filter? I was hoping to not have to run everything through Color just to make it broadcast safe.



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Danrnw
Re: FCP 6 (or 5) won't clamp my reds!
on May 31, 2007 at 7:54:26 pm

Hmmm,
I don't have FCP 6 yet, but in previous versions, the Broadcast Safe filter
did indeed allow you to set a maximum output of saturation.
Are you saying the FCP 6 version doesn't allow this anymore?

In FCP 5.1.4 (and previous versions going back quite a ways)
in the mode you select custom, then set the sliders were you
want them to limit or luminance and chroma. Works for me.

Dan



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walter biscardi
Re: FCP 6 (or 5) won't clamp my reds!
on May 31, 2007 at 7:56:27 pm

[Danrnw] "don't have FCP 6 yet, but in previous versions, the Broadcast Safe filter
did indeed allow you to set a maximum output of saturation."


Actually, it never worked. The Broadcast Safe filter has only worked on Luminance, Saturation was always left alone.

I have always manually brought the saturation down using the CC tools in FCP.

Walter Biscardi, Jr.
http://www.biscardicreative.com
HD Editorial & Animation for Broadcast and independent productions.

All Things Apple Podcast! http://cowcast.creativecow.net/all_things_apple/index.html

Read my blog! http://blogs.creativecow.net/WalterBiscardi


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Danrnw
Re: FCP 6 (or 5) won't clamp my reds!
on Jun 1, 2007 at 3:05:44 am

Totally incorrect here.
Take a clip with saturation at 115% for instance.
Drop the broadcast safe filter on the clip. Using the custom setting
(or using the very conservative setting which limits chroma to 105%
and luminance to 100%.)
Set the saturation for 105% (legal for broadcast) and that's what you get.
You want saturation limited to 100%, set it for that.

FCP 5.1.4 output through Aurora Pipe Studio. Always worked.
I assume you are looking at your output on a scope
looking at the output of your card, whatever that is?

Dan



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walter biscardi
Re: FCP 6 (or 5) won't clamp my reds!
on Jun 1, 2007 at 7:18:01 pm

[Danrnw] "Totally incorrect here."

It's never worked here, have graded over 100 HD shows for broadcast and it has never clipped the saturation. Haven't tried FCP 6.

Saturation is not something you should allow a filter to clip anyway, much better to do this correctly using a color correction tool.

Walter Biscardi, Jr.
http://www.biscardicreative.com
HD Editorial & Animation for Broadcast and independent productions.

All Things Apple Podcast! http://cowcast.creativecow.net/all_things_apple/index.html

Read my blog! http://blogs.creativecow.net/WalterBiscardi


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Deadhead
Re: FCP 6 (or 5) won't clamp my reds!
on Jun 1, 2007 at 9:00:03 pm

Yes. FCP 6 wont clip the saturation either.

I dont want to reduce the saturation overall - just soft clip the reds that are illegal.


I guess I'll be running everything that needs to go to broadcast through Color.

I just dont know how Apple can continually neglect to offer a working broadcast safe filter.



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Danrnw
Re: FCP 6 (or 5) won't clamp my reds!
on Jun 2, 2007 at 2:36:17 am

Whether you believe it or not, (and I've been working with tape to tape
and broadcast TV since 1972 and have built broadcast transmitters
and physical plants and know a thing or two about visual and aural
as well and video and audio) using FCP from 4 to 5.1.4, the broadcast safe
filter, used through Aurora Pipe Studio, into a Tektronix waveform
monitor, either directly out of the card or looking at the output
of the DigiBeta deck, correctly limited Chroma at the set point
I tell it to limit at. If it's not working for you with an AJA card,
I think we need to ask them why. Since I've got to buy the KONA 3
or the Io-HD or the Blackmagic versions this summer to move to HD,
maybe be we need to find out why AJA has not been able to make the
Broadcast safe filter work correctly. Have you ever asked them why
the chroma adjustments don't work?

As for your comment about reducing total chroma in a scene or
clip versus clipping it at 105 or 100%, this should not be your call.
It should be the person doing the color correcting and looking
at the shot or show. The look of those two different ways of
handling the scene are totally different.
Just the same as it would be to lower the overall video level
to under 100% if your highlights were over that point,
as opposed to clipping them at 100. It all depends of what
the shot is.

Dan



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