Difference beetween redspace and rec709

[CARLOS ANDRES GOMEZ ARDIL]

Hi guys i need to know which is the difference whithin COLOR Space between REDspace and REC709.

And other question, How can i view ¨color raw¨ in RED Cine? and see the difference

 

[Carmen Del Toro]

REC 709 is where you want to be in Broadcast:redface:

 

[CARLOS ANDRES GOMEZ ARDIL]

But, these Space Color Work as LUT, Why I'm want to be in broadcast?? Why I see best Redspace ??? you know how it work??

 

[Brandon Kraemer]

In Redcine, you can interpret the Gamma space and Color space in a variety of ways. Raw is what you have in your .R3D file, in Redcine, you are always looking at the Raw in your color/gamma space settings of choice.

While Rec 709 is the proper gamma space to end up with in broadcast, this might not be the space you want to transcode into. Your not locked into that by any means. There is a technique where by you transcode with Camera RGB and RedLog (color and gamma spaces respectively) to get a very flat plate in which to color correct from, for example.

If your transcoding plates to composite or color correct from, you might want to consider a low con pass like the above example at this stage instead of going with what looks best in Redcine. You can always add in contrast later when you set your look with a proper grading too. Redcine is in essence, a one-light transcoding tool.

 

[Tehben Dean]

I have a question.
What exactly is a Color/Gamma Space?
Once the raw file is transcoded to ProRes is it still using these spaces or are they only used to interpret the raw file?
If your footage is destined for internet which space should be used?

 

[Hans von Sonntag]

I have a question.
What exactly is a Color/Gamma Space?
Once the raw file is transcoded to ProRes is it still using these spaces or are they only used to interpret the raw file?
If your footage is destined for internet which space should be used?

The colour space is the environment in which you look at your pictures. Because that is highly different from one location to another (dark room CRT televison, laptop outside sunshine, LCD in editing suite, etc....) there are a few standards in this industry, such as Rec709 for 1080p broadcast beeing the most widely used. Rec709 is very close to sRGB gamma 2.2 which is AFAIK the standard for the web. Ideally you calibrate your screen to this standard and put it in an environment that does not influence your perception too much. It does make a lot of sense to go to the next grading suit around your corner and look how they set up their room.

Gamma can be described as a curved line representing the luminance values of a particular setup. Changing this curve will alter the luminance and respectively the saturation of parts of your footage. A log curve looks flat and kind of washed out but does not favour or compress a certain part while a s-curve like Red's gamma curve Rec709 compresses the blacks a bit and does other things to make a pitcure look more pleasing. Here RedSpace is the most radical one, which looks vibrant but does throw away information. This is not necessarily bad because any grading throws away information by crushing the blacks for instance. But for rushes which will be used for compositing or any other post production you may not want this. Here RedLog might be the right choice.

Red's Gamma curves are not the colour space you look at. In the moment I look at sRGB gamma 2.2 on my laptop in a tungsten lit room, mixed with daylight - not an ideal grading environment. This is a bit confusing but well...

Hans