Bradcast Colors FX blurs image ??

will-3 wrote on 7/13/2008, 4:01 PM
Just before we do a final render we apply the Sony Broadcast Colors FX to our video track and set the value to 'consertative'

Now, all of of a sudden it really blurs the image...

We were experimenting around with short cut keys and may have changed something without realizing it...

We have checked the actual values in the FX...
- Luma min = 0 max = 100
- chroma max = 100
- compisit min = 20 max = 110
- studio RGB checked
- smoothness min on all

Actually the Broadcolors FX instantly blurs/distorts the image...

Our white letters on a bright blue background get blurred and the blue smudges into the white area... it looks totally unuseable after the Broadcast Colors FX is applied to the video track...

Anybody have any idea's?

(We are using Sony Vegas 5)

Thanks for any help!

Comments

Former user wrote on 7/13/2008, 4:27 PM
Are you seeing this after render/output to tape?

Dave T2
John_Cline wrote on 7/13/2008, 7:33 PM
Instead of scaling the levels, the Broadcast color filter hard clips the whites and blacks, which can and will distort the image. It is probaly better to use a scaling filter, like levels or curves.
farss wrote on 7/14/2008, 12:50 AM
What John says above is indeed true although you can adjust the BC filter to roll off rather than hard clip. However much better to start off with colors at legal levels and within gamut. The media generators' color selectors in Vegas do have a warning indicator, the yellow triangle, that'll tell you if your color are outside spec.

Bob.
will-3 wrote on 7/14/2008, 5:16 AM
I guess I need to find a good tutorial on this...

- what are the broadcast legal limits?
- how to adjust your video to be within those limits.
- how to use the color tools in Vegas
- how to use the scaling filter (levels or curves)
- The media generators' color selectors
- etc

A friend spent some time with me on color correction but it would be nice to have some tutorial (video maybe) reference to refer to as needed.

Thanks for any help.
farss wrote on 7/14/2008, 5:37 AM
That's a lot of ground to cover. You could start here:

http://www.glennchan.info/articles/articles.html

Plus there's lots of training DVDs availaible from VASST.

Bob.