Jump to content


Photo

I need some help grading this .DPX from a 500T scan


  • Please log in to reply
7 replies to this topic

#1 Samuel Berger

Samuel Berger
  • Basic Members
  • PipPipPipPip
  • 1176 posts
  • Cinematographer
  • Seattle

Posted 19 February 2018 - 02:30 PM

I've just received some 4K scanned Super 8 film from Cinelab. I don't know how to make it look normal, it's a flat scan. Can anyone with Resolve give me a hint?

 

Here's a sample DPX: 

http://www.classiche...mpcc/sample.dpx

 

I thought it would be as easy as opening it up and throwing a LUT. Well there aren't any LUTs for actual film in the menu....


  • 0

#2 Phil Rhodes

Phil Rhodes
  • Sustaining Members
  • 12200 posts
  • Other

Posted 19 February 2018 - 06:04 PM

Is that a bit underexposed, or does all Super8 look like that?

 

I've made an Adobe curves file which makes (what I consider to be) a reasonable job of the colour rendering, though it's abominably grainy.

 

super8png.png

 

P


  • 0

#3 Samuel Berger

Samuel Berger
  • Basic Members
  • PipPipPipPip
  • 1176 posts
  • Cinematographer
  • Seattle

Posted 19 February 2018 - 06:17 PM

Thanks Phil, that is how I'd like it to look. I've been trying for hours but I'm probably going to give it a rest. I use DaVinci Resolve without knowing how to use it.

 

I shot that on a Canon 814XL-S and it was a pain to focus in low light.

 

Is there a way to apply that curves file on Resolve?


  • 0

#4 Samuel Berger

Samuel Berger
  • Basic Members
  • PipPipPipPip
  • 1176 posts
  • Cinematographer
  • Seattle

Posted 19 February 2018 - 06:56 PM

By the way, it was shot wide open at 1.4. I needed at least 1.0 under those lights.


  • 0

#5 Phil Rhodes

Phil Rhodes
  • Sustaining Members
  • 12200 posts
  • Other

Posted 19 February 2018 - 07:04 PM

No idea. I've attached it, anyway - though I had to rename it to .txt because the forum won't let me upload .amp files.

 

(It's a mnemonic for "arbitrary map.")

 

I have a tool somewhere that'll render various LUT formats from .amp files, I can look it out if it's any good to you, but really it's not complex. It's just that gamma curve to somewhat normalise the contrast, and I sampled the white stripe on the camera-left side of the frontmost girl's jacket to take the blue cast out. That's why the RGB curves aren't completely linear, but it's very minor.

 

P

Attached Files


  • 0

#6 Phil Connolly

Phil Connolly
  • Basic Members
  • PipPipPipPip
  • 456 posts
  • Director
  • London

Posted 20 February 2018 - 10:02 AM

There is a curves tool in resolve, that would do the job in a similar way.

 

On resolve 12 the curves tab is the 6th one along in the colour workspace.  


  • 0

#7 Bruce Greene

Bruce Greene
  • Basic Members
  • PipPipPipPip
  • 577 posts
  • Cinematographer
  • Los Angeles

Posted 20 February 2018 - 12:15 PM

I've just received some 4K scanned Super 8 film from Cinelab. I don't know how to make it look normal, it's a flat scan. Can anyone with Resolve give me a hint?

 

Here's a sample DPX: 

http://www.classiche...mpcc/sample.dpx

 

I thought it would be as easy as opening it up and throwing a LUT. Well there aren't any LUTs for actual film in the menu....

Actually, there are both curves and film emulation LUTs in Resolve.  You can start with the film emulation LUT, something like "Kodak 2383 - REC709" and it will emulate a film print.  The curve is built into the LUT.  I think you're going to need to read that big Resolve manual :)


  • 0

#8 Samuel Berger

Samuel Berger
  • Basic Members
  • PipPipPipPip
  • 1176 posts
  • Cinematographer
  • Seattle

Posted 20 February 2018 - 04:05 PM

Done, here's the result: http://www.cinematog...045#entry493343


  • 0


Tai Audio

Wooden Camera

Technodolly

CineTape

Metropolis Post

Aerial Filmworks

Rig Wheels Passport

Willys Widgets

Visual Products

Broadcast Solutions Inc

Abel Cine

Media Blackout - Custom Cables and AKS

rebotnix Technologies

Glidecam

Gamma Ray Digital Inc

The Slider

New Pro Video - New and Used Equipment

Paralinx LLC

CineLab

FJS International, LLC

Ritter Battery

Technodolly

FJS International, LLC

Metropolis Post

CineTape

Aerial Filmworks

Abel Cine

Wooden Camera

Willys Widgets

The Slider

Broadcast Solutions Inc

rebotnix Technologies

Tai Audio

Media Blackout - Custom Cables and AKS

Paralinx LLC

Ritter Battery

New Pro Video - New and Used Equipment

Visual Products

Gamma Ray Digital Inc

CineLab

Glidecam

Rig Wheels Passport