GH3 Best Video Settings

mat33

@yak looks good-definitely boosts skin tone contrast which helps. Would be nice if we could somehow set in-camera. I think I might play around with vivid a bit more -seems to have less shadow detail than natural but ?better mids…

yak

It's not bad, there are ways to hide the deficiencies of the red channel... I did some corrections tell me what you think, keep in mind it's on snap taken from a vimeo clip, not much range. First image is corrected (name hue).

First image, not much red in it... but still...

The third one is revealing, because there is a lot a orange/red... before the hue change look at how everything is contrasty but the skin... On the hue corrected image, the contrast of the image is constant.

mat33

@yak thanks. What do you think about skin tones in this vimeo clip

at ~1:42 -this was shot vivid -5 -5 -5 -5. (If I use vivid I tend to set saturation at -3). Also check out

at ~00:50.

yak

@mat33

It looks like it's almost non existent when you shoot vivid 0,0,0,0 because of the more aggressive contrast, but from what I have seen this issue is in every picture modes @ every settings.

yak

On a simple grade it makes all the difference, I like the say it "sets" the eyes and how the skin stops glowing...

On this grade I did set the intensity at 70% because I was shot underexposed... could have been less

mat33

Is this flat/red mid tone issue present with all picture modes such as vivid or scenery or just natural/standard which use similar tone curves which allow with more DR?

yak

I agree in that situation it might be a little rough, I tried your grade than applied to LUT, and it should have been the other way around, to keep the skin just the way you want it.

I think the adjustment is the right one, it's just unfortunately done in post, so yeah working with 8bits, if it could be done in camera before encoding it would be very good.

maddog15

@yak. Hey.... What if I send you a shortened (8 -10 seconds) MOV or MP4? I can PM a dropbox link for you to download. My fear is this: You're doing a lot of work, tweaking, adjusting, posting etc. etc. But on a screen grab as apposed to the actual video codec information! Too much being lost in the grapevine kinda thing? How would your adjustments react to the actual video file? Let me know and I'll render down a short version and send you a link. BTW: Not trying to create more "work" for anyone. I know this stuff is exhausting. Just thought I'd throw it out there. Seems like a more reliable way to achieve results in a more controlled experiment eliminating generation loss. Let me know... ;)

maddog15

@yak Yep...Yes...Hard to describe. Probably from my lack of experience but it seems to pull the lower mids and darks up. Harder contrast. A little rough and gritty (at least for the down and dirty example you're working with) but that's not a bad thing. I have to remind myself we're working with just 8 bit color here - but this adjustment does seem to allow the image to break out of that "flat, red, GH3 dead mid-tone look. Hope that make sense.

yak

@maddog15

First picture: Took you untouched file, tried to grade it like your graded file without the light effect (added sharpness so we can really see the skin)

Second picture: Just added the LUT, and to me as far as the look of the skin, it makes a huge difference.

What do you think?

maddog15 · Screen Shot 2013-10-20 at 12.35.02 AM.jpg

@yak. Here's a file I corrected a while back. I'm pretty happy with the graded cinema feel of this one. I like this result because there's good tonality and dynamic range. Whites are good, blacks are almost crushed but acceptable for this stylistic feel. Reads like skin as far as a stylized cinematic feel goes. (Image is a bit too sharp for cinema look but it was just a test for color and grading.) Thought I'd post it so you can have more assets to test your LUT variations if you like. Thanks again :)

joethepro

Although now that I think about it, if you right click on a corrector node in Resolve, cant you select only specific channels to modify? I wonder if this could work? Ill have to test.

joethepro

"There's unfortunately no filter in: premiere, fcpx, after effect, photoshop, motion, speed grade etc... Resolve have that tool but when you use it it doesn't quite work."

No, Resolve does not seem (that I have found yet) to have that tool. The hue vs lum does not isolate color channels, but rather specific colored pixels. This is not what we want. We need to isolate the red channel only.

yak

HAPPY NEW YEAR!!

@konjow There's unfortunately no filter in: premiere, fcpx, after effect, photoshop, motion, speed grade etc... Resolve have that tool but when you use it it doesn't quite work.

@rNeil I did another test and adjusting the blue and green hue really didn't do much for skin on maddog picture, it brings up the collar and the green wall behind him... but that "real" look was just due too adjusting the overall contrast... the problem really lies into the red color.

@maddog So yes to me the skin on this guy looks quite fixed with the latest .cube file you just need a good image contrast unless you intend to let it flat... then skin will look as good, meaning: it will match the overall flatness of the image.

I'll do another .cube file to give an even more aggressive hue adjustment, so the user could play with the intensity. In fcpx I can change the intensity of the LUT, I would like to know if it's possible to do the same thing in premiere.

Here is a fact: When grading a shot that was overexposed you need more red hue brightness adjustment than the .cube file allows. When grading underexposed you need less red hue brightness adjustment.

joethepro

@yak Well, when selecting red in the hue vs lum adjustment, it does not look at the red content of every pixel, or the red "channel". It just picks out the pixels that have a red value in the range specified (or something). Its just not the right tool for this. We need to be able to isolate the entire red channel, I think.

konjow

@yak which filter in Premiere are you using to do: "hue-brightness pluses..." @rNeil thank you for your comment. I begin to understand "skin issue" now. (issue not fix yet:)

yak

@joethepro it should be affecting every pixels containing red... but it does not, maybe I'm doing it wrong but even when I'm selecting a wider range of hue to adjust, the same thing happens. Is it the .mov, should it be encoded in prores before? I don't know.

joethepro

@yak I saw the same issue when using the hue vs lum adjustment in Resolve, but I think that is not the proper way about it. When we do that, it is just looking at those specific red pixels, and nothing else. Thats why it gets funky because there is no gradient between the adjusted pixels and the neighboring pixels. When you did your red brightness level adjustment, werent you affecting the red component of ALL the pixels, and EVERY color? You weren't just selecting the red-ish pixels on the screen and adjusting those. This is what we need to figure out in Resolve.

yak

I did the hue-brightness pluses to green and blue after applying the previously posted LUT and crushed the mids a bit because it boosted the blue and green mids.

I may make a LUT out of that to for those cases... the best would be to have both settings on the same file with an intensity cursor.

What sucks is that no video program can boost hue the same way, I did those LUT using a 10$ photo editing application and a complicated process to end up with a .cube file.

rNeil

@yak

Your "correction" of @maddog15 's image is quite ... "real" ... very nice looking file, much better dimensionality to it. Hmmm ...

Now, did you re-configure your LUT, or simply do the hue-brightness pluses to green and blue after applying the previously posted LUT?

Neil

yak

@joethepro Yes and no, you can use the "hue vs lum" tool, but for some reason just a small change and the whole codec breaks down...

joethepro

Is there any way to achieve this with Resolve 10?

yak

Thx alot @maddog15, To me it looks way better, I like the eyes, ears forehead better... looks weird at the jaw. Maybe balancing toward "red" maybe part of the problem. More tests to do!!

Can you adjust the intensity of the LUT in premiere? Wondering if I should make it stronger so one can choose the intensity...

EDIT: Just tried something... upped the opposite hue brightness +green +blue since it was shot toward red... brings noise in the background, seems to add more colors to the face... what do you think?

maddog15

Sorry. forgot to attached the file.

maddog15

@yak Ok. I've applied your LUT to this corrected footage in Premiere Pro by loading it as a Lumetri setting. Seems to bring back the darker tones within the Red channel giving a bit more shape and definition to the shot. I used the latest file you posted. 3-way color corrector, Fast color corrector and RGB curves used with your LUT. Thoughts?

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