Color Space and Gamma Space

[Michael MK Siu]

Dear all,

I am hoping someone can do a quick breakdown of all the different color space options in REDAlert.

I understand that if for HD, REC709 is the standard, but utilizing other color space, like REDspace, I will have more room to c.c. while in REDCine / REDAlert.

What about all the other options, and their pros / cons?

As well, although I understand the concept of color space, I am abit fuzzy on gamma space.

Lastly, if I am still on Build 15. Should I stay off REDSpace and just stick to REC709 for color space? What of gamma space?

Thank you for the help.

Michael
---
[www.dvshortfilms.com]
[www.mksiu.com]

 

[Medavoym]

I am hoping someone can do a quick breakdown of all the different color space options in REDAlert.

I totally agree. There is a lot of confusion regarding these options. A thorough explanation will help everyone.

 

[Derek Wiesehahn]

I'd like some clarification on that too.

 

[gbalaji]

Dear all,

I am hoping someone can do a quick breakdown of all the different color space options in REDAlert.

I understand that if for HD, REC709 is the standard, but utilizing other color space, like REDspace, I will have more room to c.c. while in REDCine / REDAlert.

What about all the other options, and their pros / cons?

As well, although I understand the concept of color space, I am abit fuzzy on gamma space.

Lastly, if I am still on Build 15. Should I stay off REDSpace and just stick to REC709 for color space? What of gamma space?

Thank you for the help.

Michael
---
[www.dvshortfilms.com]
[www.mksiu.com]

Michael,

RedSpace was developed by RED to get WYSIWYG ( What you see it What you get) both in your shoot monitor and your computer.

Gamma correction, gamma nonlinearity, gamma encoding, or often simply gamma, is the name of a nonlinear operation used to code and decode luminance or tristimulus values in video or still image systems.[1]

Link - http://en.wikipedia.org/wiki/Gamma_correction

 

[arapro]

Hi All,

We have done some experiments using export options, and in short my conclusions are:

Use rec709 for video colour space (re HD) and Log colour space for Film finish.

This makes a huge difference when working with red files, and we ve found out that this aspect of shooting red is one of the darkest areas. With the least discussion an dsupport.

We have a DI suite with a Baselight 4 and we projected 4K files with a 2K Projector. (by the way the difference between 4k and 2K is hardly visible to the human eye, at least whe projected)

We have also found that depending on the way the footage is shoot, the sensor can create compression on the files, especially on highlights. This is not a good thing, especially if you are creating a film.

I would recommend using and keeping LUTs to maintain a constant look.

My two cents,

Cheers,

Alex

 

[Radoslav Karapetkov]

We have a DI suite with a Baselight 4 and we projected 4K files with a 2K Projector. (by the way the difference between 4k and 2K is hardly visible to the human eye, at least whe projected)

I'm sorry but.. don't you need a 4K projector to see the difference?

 

[arapro]

The projector rezises 4k to 2k for display, but the information (pixels) is still there. You can actually see it if you zoom in ! but to the eye ... there is none.