Color Checker Passport Video Help

Color Checker Passport Video Help

Today, I used a color checker passport video card in my footage. When I imported the footage into resolve, I applied a CST to go from SonyGamut3/SLog3 to a DavinciWideGamut/Davinci Intermediate working space.

Then, I added another CST to go to Rec.709/Gamma 2.4

In between those two CSTs, I did a color match. Here is a link to the screenshot of the resulting footage. The first is with the color match enabled, the second is with it disabled.
https://imgur.com/a/ehW3H5u

As you can see, when the color match is enabled, the footage is quite red and bleak. When the color match is disabled, it looks more full of appropriate colors.

Is this how it's supposed to be? If so, what am I supposed to do to bring the colors back? drive up saturation? Thanks.

My color science is Davinci yrgb
My timeline color space is DWG/Intermediate
My output color space is Rec.709/Gamma 2.4

u/Apprehensive-Coast92 — 3 days ago

Am I doing this right?

I went out yesterday to shoot on my Sony fx30 on an anamorphic 1.33x lens. I finally got some ND filters and so I was able to keep my ISO at a base of 800 and I think that helped a lot. I have a few quick questions though..

  1. Does the image itself look formatted appropriately? I just want to make sure I am not missing anything in the post production (I desqueezed the footage and set the resolution to 3840x2160.. is that all I need to do?).

  2. If I wanted to post on social media in 4:3, is the best solution just to crop the video after exporting? The horizontal nature of 1.33x anamorphic just won't perform well when people are used to viewing vertical content, but I've seen some other creators post in 4:3 and that seems like the way to go.

Thanks :)

u/Apprehensive-Coast92 — 6 days ago

Discrepancy in waveforms

Update: I’ve got a few responses back and the consensus is that the shots are fine. I’m overthinking it 🫠

Yesterday I got back and color graded a few shots. In the first and third images(railroad and truck) I attached, you'll see that the wave form is very stretched out. My assumption is that this is a reflection of the image itself not having distinct contrast? Everything feels fuzzy and flat and lifeless. But the second image attached(of the river) has a waveform that seems much more cohesive.

Im wondering what I did wrong on the first and third images. Is it something to do with the way I shot the footage, or in the color grading process? I was shooting outdoors on my Sony fx30 using a 24mm sirui anamorphic lens. No ND filters(just got those today) so I assume I had to drop down the iso quite a bit and also close the aperture for some of these shots. Maybe that was the issue. Let me know what you guys think!

• CST from SLOG to DWG
• Modify Lift, Gain, Gamma in colo wheels
• Address color correction using color bars with LUM mix all the way down so I can adjust colors freely
• adjust contrast using middle grey point
• saturation boost, enhance colors using color slice
• vignette
• CST from DWG to Rec709

thanks

u/Apprehensive-Coast92 — 8 days ago

Can someone explain this waveform discrepancy?

Update: I got a few responses back and the general consensus is that I’m over thinking it 😅 shots are fine I just need to work on my technique in the color grading process

Hey everyone,

I recently purchased a Sony FX30 and have been doing some shooting outdoors. Yesterday I got back and color graded a few shots. In the first and third images(railroad and truck) I attached, you'll see that the wave form is very stretched out. My assumption is that this is a reflection of the image itself not having distinct contrast. Everything feels fuzzy and flat and lifeless. But the second image attached(of the river) has a waveform that seems much more cohesive.

Im wondering what I did wrong on the first and third images. Is it something to do with the way I shot the footage, or in the color grading process? I was shooting outdoors on my Sony fx30 using a 24mm sirui anamorphic lens. No ND filters(just got those today) so I assume I had to drop down the iso quite a bit and also close the aperture for some of these shots. Maybe that was the issue. Let me know what you guys think!

• CST from SLOG to DWG
• Modify Lift, Gain, Gamma in colo wheels
• Address color correction using color bars with LUM mix all the way down so I can adjust colors freely
• adjust contrast using middle grey point
• saturation boost, enhance colors using color slice
• vignette
• CST from DWG to Rec709

thanks

u/Apprehensive-Coast92 — 8 days ago

Tips for improving Neutral Shot

Hi friends,

I took this footage today from my Sony fx30 shooting in sLog. I've spent the last few days trying to improve my color correction process and I feel this is a good base. My issue is that I dont really know where to go from here.

Does anyone have any advice on some fundamentals to go from basic color correction, to creating a visually impactful scene?

Heres what I did so far in my node tree
• CST from SLog to DWG
• Basic color correction using parade graph to level out rgbs
• located middle gray on curves palette and shifted contrast
• AI face resolution to improve washed out skin a bit
• a bit of saturation boost
• added vignette
• added LUT
• CST from DWG to Rec 709

thank you in advance,

Dailen

u/Apprehensive-Coast92 — 9 days ago

Exposure Index Clarification

I am struggling to understand the benefits of shooting in Cine EI. This is my understanding of Cine EI currently:

Every camera has a Base ISO that it performs well at without introducing unwanted noise. I have a Sony fx30 and the two Base ISO values for Cine EI are 800/2500. By shooting using Cine EI, you can record in these base values while changing the monitor screen to more appropriately reflect the end result you may find in post production after turning the gain down.

Today, I went outside to shoot and I selected the lower base ISO value(800) which is meant for daylight shooting. The shot looked fairly overexposed, so I turned down my EI value a few stops to have the image feel better. I got the footage back into davinci resolve and... well.. the footage was overexposed. I tried to turn my gain down but it's all just washed out.

My question is this... why would I use Cine EI to fool myself into thinking that im correctly exposed when in fact im not? Wouldn't it be better to just use a false color LUT to tell when i'm over exposed and then use an ND filter to get the correct exposure right then?

Thanks!

reddit.com
u/Apprehensive-Coast92 — 11 days ago

How to know when something is underexposed

Hello everyone, I just recently purchased a Sony fx30 and a Sirui 24mm f2.8 anamorphic lens. Im shooting using Slog/Cine EI. 24fps, 1/48 shutter, ISO 2500. I shot inmy living room with very low light(just a few Edison bulbs and a stairway light). This is the result after importing the clip into Davinci resolve and performing a Color Space Transform on the clip.

Is this simple too low of lighting for this lens to handle? Or am I missing something critical?

Thank you in advance

u/Apprehensive-Coast92 — 11 days ago

Helpful advice for shooting outdoors?

Hi friends,

I’m using my iPhone and black magic camera app to shoot some scenes outdoors. Shooting during broad daylight has proved to be difficult for me as I always come back home with varied results. Here is an example:

I’m using a Nusi ND filter(I think a variable 5 stop). I also have a 6 stop non variable that maybe I should have used in this case for the background light. Any advice would be helpful.

As you can see, the background light is causing the foreground to be very dark. What’s the fix for this?

u/Apprehensive-Coast92 — 25 days ago