Standard on sensor but Skintone in menu

[Lee Kelly]

I spare you the details but today i worked on a multi-camera feature and was a very last second addition. Just as we were about to shoot, we realised that I was running Skintone OLPF and the other cameras were on Standard.

Question;

Is there such a significant difference that these different OLPFs would not match?

We had an opportunity to swap out one of the Standards and put that into my body. When I went to select Standard in my menu, it was not available, due to an older firmware (I dont own Standard so didnt bother with the more recent firmwares, as my camera is working great...)

Next question;

If we swapped the Standard OLPF into my camera but didnt have time (on set about to shoot) to update firmware and instead just selected 'Skintone' or 'Lowlight' for example, would that cause the camera to freak out?
What exactly does that menu setting do anyway?

We ended up not wanting to risk anything funky going on behind the scenes inside the camera and so swapped back in my Skintone OLPF and shot a grey and colour chart for the colourist to give them the best opportunity to match my camera with the others. But I am interested to know if there is a big enough difference between Standard and Skintone to notice and if one was physically used but not selected in the menu what the ramifications might be?

And yes, I know all of this should have been worked out during prep but as I said, I was a VERY late addition and these questions were only raised as we were about to roll. A lesson here for anyone else caught in a similar situation to check these things as early as possible as updating firmware and black shading on set while a 1st Ad is yelling at you is never fun.

 

[Hans von Sonntag]

No, no risk of non-matching shots. Different angles, and therefore different lights, shadows, exposure, etc... play a much more significant role in colour matching than OLPS in otherwise similar/same colour science with the same camera type.

Hans

 

[Björn Benckert]

You did right, shaping olpf but not the setting is making things a bit off, matching two different olpfs with each other is quite easy they only differ on the extremes so with a bit of grading no body will notice.

 

[Lee Kelly]

I am going to do an update of firmware now anyway just so I have that option. Looks like I will spend another $200 at red.com tonight too ha ha More OLPF than days in the week bloody hell.

 

[Mikael Lubtchansky]

The OLPF type is only metadata (but does affect the debayer process for color accuracy) and can be changed in REDCINE-X by creating a new R3D file using the OLPF override function.

quote from the REDCINE pdf :

1. Right-click a clip in the browser.
2. Select Generate R3D from OLPF Override....
3. Select the OLPF that you want from the OLPF drop-down menu.
4. Click OK.
5. Click Save.

 

[Lee Kelly]

That is VERY interesting...

 

[John Marchant]

The OLPFs can have a noticeable effect on colour reproduction, even within normal exposures such as a colour chip chart. Obviously they are calibrated to match, but that matching can only happen at one absolutely specific colour temperature/exposure/lighting/optical situation.

Take a look below for example. This is illustrating the KipperTie colour science, the STD and the LLO vs the STH. Each colour chip is split left/right.

 

[Lee Kelly]

Hey John,

Looks like you are matching very closely to STH.
I must say, I thought the LLO was decent enough but the STH is so much richer right out of the camera and I like it.

It was a bit annoying today because i was sitting around all morning ready to shoot and waiting waiting waiting and then 10mins before i was due to turn over we were asked to swap out OLPFs on location! Luckily for us, i had Johns Kippertie IR and Full Spec and the changing protection kit and from my time swapping out for IR (love it John!!!) I am quite quick and safe in doing this now. Thing is, as we swapped the filters over, I was not able to select STD and swapped back all while the megaphone was calling out 'c'mon Lee we have a film to shoot' Geez.
Lesson learned.

 

[Björn Benckert]

The OLPF type is only metadata (but does affect the debayer process for color accuracy) and can be changed in REDCINE-X by creating a new R3D file using the OLPF override function.

quote from the REDCINE pdf :

1. Right-click a clip in the browser.
2. Select Generate R3D from OLPF Override....
3. Select the OLPF that you want from the OLPF drop-down menu.
4. Click OK.
5. Click Save.

Aha,
Did not know that.

 

[Michael Lindsay]

The OLPF type is only metadata (but does affect the debayer process for color accuracy) and can be changed in REDCINE-X by creating a new R3D file using the OLPF override function.

quote from the REDCINE pdf :

1. Right-click a clip in the browser.
2. Select Generate R3D from OLPF Override....
3. Select the OLPF that you want from the OLPF drop-down menu.
4. Click OK.
5. Click Save.

Great info thanks