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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

RED Cambook

wow, you guys are really going beyond my expectations.
 
Hello all,

We are a new RED using shop & certainly understand that we need charts & cards to shoot on set to calibrate our camera as well as in post. At the risk of upsetting someone lol are there any alternatives you think are worth considering for our Scarlet or should we just jump on this book?

As well, any links to info & tutorials for best practices on set & post process use of charts would be appreciated.

Thanks,

PCG
 
PCG - any chart (just about, but please avoid the cheap Macbeth knockoffs) is better than none. The RED Cambook and DSC charts are accurate and calibrated. For use, I like to record (via the chart) any major lighting setup for white balance and colorimetry purposes. A chart doesn't need to be in every shot, but every major lighting setup can be very useful. DSC charts are shiny, which some people think is a pain (but read on for why it's worth it). It is - you have have to orient them properly to avoid nasty reflections. Thing is, a flat chart would still have that reflection at that orientation, altering the brightness of the patches, but you're not as likely to see it. With the DSC you can see it so you can fix it and hence get accurate results.

Graeme
 
@Graeme
Good seeing you at NAB. Meant to ask you there: any chance of a Auto Correct button in RCX for use with the RED Cambook? Would be a great speed tool for doing fast primary grades and a good starting point for any subsequent grading
 
Thanks a million Graeme...very kind of you to help being the authority. We will certainly order the book ASAP.

Any advice for setting temp in an uncontrolled environment or just shoot chart & sort in post?

Thanks again...
 
PC, as long as white is reasonably white, it's fine to have a chart in shot just to fine tune wb in post. Generally movies or TV shows will pick a tungsten wb and a daylight wb setting and pretty much stick to it through shooting, maybe altering accordingly, maybe not.

Josh! Always good to see you. Auto correct is a darn good idea and certainly something we've been thinking on. Which aspects of the image do you think you'd like auto-ing off the chart?

Graeme
 
@Graeme
Since the Cambook chart has all the primary Vectorscope colors and exposure range grey scale seems like you could have an auto preset that could snap the file into perfect technical HSL calibration. From there we can apply a look as needed. This could be a huge time saver over hundreds of clips where color matching is critical and a real bonus to using REDraw and RCX.
 
Is there a vectorscope somewhere in RCX that I'm missing? Since it's essential to using these charts properly it's gotta be in the program somewhere . Can someone let me know where it is?

Thanks,

Bob Wojda
Scarlet #420
 
"Since it's essential to using these charts properly it's gotta be in the program somewhere ." - there's no absolute need for a vectorscope. Although the charts work really well with one, they also work equally well with waveforms and eyeballs too. Vectorscopes can also be deceiving as a brighter image is often indistinguishable from a more saturated image on the vector position....

Graeme
 
Graeme, wasn't there an "auto-calibrate" feature in the works, where you could use one of these color charts in RCX to properly and automatically calibrate the color matrix for each scene and camera ? That really sounds like a useful feature !
 
Nils Ruinet said:
Graeme, wasn't there an "auto-calibrate" feature in the works, where you could use one of these color charts in RCX to properly and automatically calibrate the color matrix for each scene and camera ? That really sounds like a useful feature !
Click to expand...

+1

Thanks

M
 
Resurrecting an old thread: is the RED Cambook still a viable set of charts for new cams and color science? It's 4 years old now.
 
Yes indeed Terry. It still works just as well as it has always done!

Graeme
 
Thanks, David. Someone was just telling me about using a chart to auto-create LUTs in Resolve and match cameras. I'm looking into this. Care to elaborate? :-)
 
Terry VerHaar said:
Thanks, David. Someone was just telling me about using a chart to auto-create LUTs in Resolve and match cameras. I'm looking into this. Care to elaborate? :-)
Click to expand...

There is a new feature in Resolve called colormatch whereby if you have shot a chart for a scene (which i tend to do frequently) then you can load that chart shot into Resolve. Then there is a mode in Resolve to point/match all the colours to their 24 boxes (telling resolve this is the value of what each chip is) it works with the colour checker by mapping all chips as known values. Resolve then "balances" those colours according to the lighting conditions you were in.

From there you can create base look for a scene (or at least start with an accurate colour palette) and then move on from there. For some of my work (archival) the colour reproduction is essential (no mood or look but just accurate colour reproduction) which is why i was so happy with Dragoncolor. You would not believe how many of the greatest art pieces have been seriously misrepresented when it comes to colour.

Battistella
 
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