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O
Offbeat Bryce Productions
Inspiring
March 1, 2017
Question

Color Bars SD vs HD. Is there a difference?

  • March 1, 2017
  • 1 reply
  • 7115 views

I noticed that Premiere has built in Color Generator Bars. Both SD and HD versions. The HD version has a complete different layout then the SD Version. I'm used to Calbrating using the SD version and using the PLUGE. It seems the HD version in Premiere and elsewhere doesn't have the standard Black on the bottom but rather a gradient of white to black with blues and reds above it in small squares.

If I calibrate my monitor using the SD bars is that the same for HD video?

SD

HD

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1 reply

shooternz
shooternz
Legend
March 1, 2017

I would  (and do) use the HD version  because of the graduation.

That along with the pluge are key points of calibration.

Cant think of a reason to use SD Bars for HD editing.

Note : I use to use it when shooting SD and check it against the SD bars from the camera. sing Scopes

Now  its all HD.

O
Offbeat Bryce ProductionsAuthor
Inspiring
March 1, 2017

I'm seeing two small grey lines which act as PLUGE but PLUGE on the SD color bars in one Grey bar not two.

R Neil Haugen
R Neil Haugen
Legend
March 1, 2017

Looking up the standards for HD color bars, there's this graphic for what each section is supposed to be ...

That should answer your question on the twin pluge bars ... the right one is Black set signal for SDTV, the left one is the Black set signal for HDTV.

From the pdf ...

"ARIB STD-B28

Version 1.0-E1

Chapter 4 Explanation

The multiformat color bar signal embodies a single color bar based on the combination of a 100% color bar signal used in HDTV and a 75% color bar signal used in SDTV. Using Making use of the aspect ratio difference between HDTV and SDTV, 4:3 aspect ratio area is utilized as the common area for SDTV and HDTV color bar signals and the outside of 4:3 area are only for HDTV use. Thus, this color bar gives benefit both for HDTV and SDTV. It provides facilities for not only video source level control but also other operational benefits such as monitor adjustments."

Neil

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