What does the word "Chroma" actually mean? at DVinfo.net
DV Info Net

Go Back   DV Info Net > The Tools of DV and HD Production > Open DV Discussion

Open DV Discussion
For topics which don't fit into any of the other categories.

Thread Tools Search this Thread
Old August 14th, 2007, 09:13 AM   #1
Join Date: Feb 2006
Location: Niagara Ontario Canada
Posts: 1,121
What does the word "Chroma" actually mean?

Does the word CHROMA refer to just colour when it deals with video?
David Delaney is offline   Reply With Quote
Old August 14th, 2007, 09:48 AM   #2
Major Player
Join Date: Jun 2007
Location: Bozeman, MT
Posts: 217
chroma |ˈkrōmə| noun purity or intensity of color.

ORIGIN late 19th cent.: from Greek khrōma ‘color.’
Frank Simpson is offline   Reply With Quote
Old August 14th, 2007, 09:49 AM   #3
Inner Circle
Join Date: Jun 2003
Location: Toronto, Canada
Posts: 4,750
In video systems chroma is the part of the signal that represents color; it's the color difference components of a video signal. You can get the numbers in a book like Charles Poynton's. Color and luminance is not separated perfectly... the wikipedia entry on chroma subsampling should have links to that information.

2- In the Munsell color system, chroma refers to the purity/saturation of a color. It is a slightly different concept. In video no one really talks about that color specification system.

3- There's a difference between chromaticity and chrominance (chroma is similar to chrominance)... the distinction of which is important when reading vectorscopes. Both refer to color. If you for example change the exposure on a camera, chrominance will change but chromaticity will stay the same. You can think of chrominance like "colorful light energy" that adds colorfulness to light... so if you change exposure, the overall energy changes and therefore that's why chrominance changes.

Intuitively when you think about color, chromaticity usually makes more sense. In some cases the distinction is not important.
Glenn Chan is offline   Reply With Quote
Old August 14th, 2007, 02:36 PM   #4
Inner Circle
Join Date: Oct 2001
Location: Honolulu, HI
Posts: 2,054
You guys are smart! I thought "chroma" was all the shiny silver stuff on Italian sportscars!

Dean Sensui
Exec Producer, Hawaii Goes Fishing
Dean Sensui is offline   Reply With Quote
Old August 15th, 2007, 11:00 AM   #5
Regular Crew
Join Date: Aug 2006
Location: USA
Posts: 64
Chroma, pffft!

The only thing that counts is progressive scan, baby ;)
Paul V Doherty is offline   Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

B&H Photo Video
(866) 521-7381
New York, NY USA

Scan Computers Int. Ltd.
+44 0871-472-4747
Bolton, Lancashire UK

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > The Tools of DV and HD Production > Open DV Discussion

Thread Tools Search this Thread
Search this Thread:

Advanced Search


All times are GMT -6. The time now is 11:52 PM.

DV Info Net -- Real Names, Real People, Real Info!
1998-2021 The Digital Video Information Network