So what is FLUT?
FLUT is the brainchild of Graeme.
The “F” in FLUT stands for “floating point”.
If you haven’t clipped RAW, you haven’t clipped any ISO. Move your mid grey anywhere you want without fear of clipping.
FLUT includes another new color science. That’s right. Number 3. Better than number 2, which was better than the original.
FLUT includes a new color space- REDcolor (more accurate than before)
FLUT includes a new gamma- REDgamma (more info from RAW than before)
Since an r3d is RAW, you can re-grade any old footage with the new color science.
FLUT works with the Mysterium sensor. It works better with Mysterium-X sensor.
1. New Color Space.
More accurate color science and a new color space called REDcolor. Remember that Color Space is not baked in to RAW. This will be the option to CameraRGB or REC 709. I pick REDcolor every time now. But all are more accurate.
2. New Gamma.
REDgamma. It is a gamma that uses more information from RAW than REC 709 or REDspace. It matches your meter. It looks fantastic. The standard REDgamma is fairly flat and ready to grade. REDfilm is a gamma that emulates scanned film… for those traditionalists.
3. Old Legacy.
REDspace, as a color space or as a gamma, plus all the old “other gammas” will be included in REDCINE-X for legacy use. But you can grade your old footage with REDcolor and REDgamma… that is the power of RAW.
Graeme’s baby. This one will be shown and explained at RED Day. You are going to love this. Money back guarantee… oh, forgot. It’s free.
In REDCINE-X, you set Color Space (REDcolor). Set Gamma (REDgamma). Set or check your White Balance. Adjust the FLUT Control. Grade. Easy.
REDCINE-X has several new features that you will appreciate… like Shadow Control. Plus… a few new big surprises.
“FLUT™ is a name we are giving to a new set of image processing features in post and in camera. As Jim mentions, along with it comes new histograms, new false color, and new camera settings. The work done on FLUT™ has helped to enable these functions in camera.
But let’s talk about how FLUT™ works with image processing, and how specifically it deals with the concept of “gain”.
Gain is a necessary part of image processing and it’s simplest to think of it as the most basic way to brighten an image. Traditionally, gain in camera was done in the analogue domain. The downside to this is that as the image is gained up, it causes bright highlights to clip, and indeed it will loose one stop of highlights to clipping for every stop of gain applied. Originally in our camera and software, we applied gain (under the controls ISO and exposure) in a way that worked just as analogue gain does.
Although it sounds simple enough to just adjust the gain so that it does not clip the highlights, like a traditional video “knee”, the devil is always in the details. Instead of a gamma option, which is what a traditional knee is, it was decided to build the smooth roll-off and non-clipping gain properties into a complete system, which much more suits the RAW development nature of working with the R3D files.
This means that while all RAW development controls benefit from the underlying FLUT™ math, the main controls that directly effect it are ISO and the new FLUT™ Control. ISO and FLUT™ Control work together and produce exactly the same results, but FLUT™ control is calibrated in stops and has a fine degree of control, whereas ISO is labeled in traditional units and 1/3 stops. They work together, so if you gain up on ISO and back down the same amount on FLUT™, they cancel each other out. If you gain up on ISO and add more gain on FLUT™, you can get an awful lot of gain. You can use ISO, or you can use FLUT™ and get to exactly the same point. You can roughly gain up the image with ISO and fine-tune with FLUT™ control. The choice is yours. I love FLUT™ control as it’s in stops, and to me, that’s a more natural way of thinking than the ISO numbers.
Sometimes, however, you may wish to have absolutely linear gain and clip those highlights, so “exposure” control works just as it did before – it’s pure linear gain and it will hard clip. However, because FLUT™ is an underlying system – all is not lost…
Take the user curve controls for example, they’ll allow you to “pull back” a highlight you’ve forced to clip through use of the “exposure” control. Or the new Lift/Gamma/Gain controls will also allow you to do the same and pull back highlights you’ve clipped earlier in the image processing chain.
So, to put it all together simply:
FLUT™ is an underlying technology, designed to help you avoid clipping unnecessarily.
It works primarily through ISO and FLUT™ Control, but helps all RAW development controls.
Exposure works just as it’s always done if you need it.
The ISO and FLUT™ controls work together – think of them as “better gain.”
“The wonderful thing about REDCODE RAW is that when color science improves… you can go back and old footage becomes NEW.
Jim Jannard – RED Leader