A two exposure 8bit file isnt an Hdri file. It holds very little exposure latitude. You need to bracket at least 4-5 exposures, than combine them to get a good amount of light information in a 32 bit exr/hdr file format.

@luisbarros4587

4 жыл бұрын

You are right, but considering the way he set his workflow doesn't really matter, because he's using lights and geometry to bounce light around into the objects. The worse thing about this video is actually the lack of a linear workflow, you would never grade your hdri to match the grading of the plates, in fact in vfx, you'd work with LUT's that you could load into your renderer and or compositing app to check if it matches, but would work with the ungraded plates to output the renders, because you don't want to contaminate your outputs... There a few big misconceptions in this video, which are unfortunate, for they can be very counter productive in a proper vfx pipeline, still it is very informative and to be fair, to properly explain the whys and how's to do it accurately would take a longer than 36 minutes, because you'd have to go and explain colorspaces, LUTS, tonemapping, 8-bit vs floating color information and so forth...

@smortonmedia

4 жыл бұрын

@@luisbarros4587 Do you know of a tutorial or series of where all of that could be learned? So far, this is has been one of the better videos I've found that has opened my eyes a lot to achieving better vfx. But you seem quite knowledgeable and would love to know of additional resources that I could reference :)

@croEdHunter

4 жыл бұрын

@@luisbarros4587 So, you are saying, color grading comes last once we have the final raw render on top of the raw footage? And then we grade both?

@BigAl444

3 жыл бұрын

@@luisbarros4587 Thanks for your insights. Curious, in making an hdri for lighting, could you shoot a perfectly exposed shot of the chrome or scene in RAW format, then change the exposure and export several for the bracketing effect? Now that I think of it (I haven't watched the entire video yet), is he just using the chrome ball for a quick reference in post or he also using it to generate the HDRI? From my experience, you need a very high dynamic range HDRI in order to get great lighting in 3D, at least in my engine, Corona Renderer.

@KRGraphicsCG

3 жыл бұрын

I wonder if this camera can do different exposures manually

So cool! Thanks for explanations!)

Thanks for another great video. Only $650 with shipping included for a chrome ball AND a grey ball? What a deal😆. I headed to my local craft shop to buy those jumbo chrome Christmas tree ornaments for $4.00 each (Canadian dollars, so that's about $3.00 US each). I painted one with a certified neutral 50% matte grey, and glued them to some 1/2" dowels. $650 vs $6.50. I've been using the Simple HDR app (Nick Campbell and company) to control my THETA S. It brackets seven images (covering 12 stops) that you have to merge yourself in Photoshop or Affinity Photo. It's a few minutes more work, but you're getting full HDRIs out of it.

@VFXCentral

5 жыл бұрын

Yea I totally missed the bracketing :( dangit!

@chosenideahandle

5 жыл бұрын

@@VFXCentral well you have the automatic bracketing with the two images, but just with the two images.

@matthieucroset

4 жыл бұрын

Do you have examples of 3D renders you did with your workflow? I'm curious to see if you can reach the shadows quality and fidelity of a real scene and match it in 3D with a Theta. thanks

@irfanpratama2241

4 жыл бұрын

With the bracketing sure we dont have any additional mess with area light light, right? Because its got more dynamic range. Cmiiw, but noticed that you got work in 8bit rgb that gonna compress the dynamic range into a linear one, so its capping the light intensity.

Thank you this was just what I was lookinh for!

EXCELLENT! Introduction my man!

Much wisdom, wish I'd found this before my last shoot... Thanks :)

thanks a lot men, saw your sisgraph presentation than finally found your channel. awesome...

Thanks for these great tutorials dude. You seem to post exactly the type of stuff I need and want to learn. It's hard finding VFX Redshift CD4 tutorials and explanations of the practicals needed to set it up! Cheers!

@VFXCentral

5 жыл бұрын

No prob!! Glad you liked it!

You've really opened yourself up for people to mess around and add stuff to your scene haha

Excellent tutorial I don't use redshift but this was still very useful.

very nice. Awesome Information

i love the way you teach

Great content n explanation

Really good video :-) Though after all that time setting up the chrome and grey balls, I'm surprised you didn't add some objects to the scene to test it out.

Matt Damon teaching VFX now, nice

If you had shot the hdri with the macbeth chart would you paint it out before exporting the hdr to use in Cinema 4d?

Thanks For The Awesome Information

Thank you

Thanks for this, THIS VIDEO IS GOLD!

thanks for tutorial. can you make full aces and hdri workflow tutorial?redshift c4d+nuke+davinci resolve

Thank you.

There are no visible in reflection and cast shadow items in octane render What should I do?

amazing

Thank you, great teaching video！

Hi, so if I understood right the chrome ball is used as a reference to place the light source on its position(I'm sorry my English). Am I right?

amazing stuff man u explain this stuff very well!

Hi ! Thanks man. Would be cool to have an alternate video using ACES color profile to get the saturation and colors right easily.

@jovicasmileski

5 жыл бұрын

Check out Andrey Lebrov for that

@VFXCentral

5 жыл бұрын

@@jovicasmileski yea he already did that video

How do you shoout your HDRI professionally, I mean fisheye lense and multibracketing. What's your workflow?

🍿

How would color correction fit into the workflow? For instance, if they're filming in a flat or RAW profile, would they grade it for realism with a rec 709 profile, do all of their 3D work using that as a reference, and then composite the 3D elements before the final grade?

@smortonmedia

4 жыл бұрын

Curious about this as well

you can use that chrom ball and extract from it hdr. shot that in different EV then you need special software to wrap that prob to spherical projection and there youi go .

What possible if I do it without 360 cam? Just have a Chrome ball is enough or not?

This had a lot of great information in it. Something I was surprised about was the cost of kit with the spheres. $650.00 USD I understand that it is specialty equipment but it's insanely easy to replicate for well under that price.

@TheBradlackey

3 жыл бұрын

You can paint a grey ball and get a chrome garden ball at any home decor store.

@terryrhuebottom

3 жыл бұрын

@@TheBradlackey Very true. Actually, I'm taking some foam craft balls using some Bondo, sandpaper, wooden dowels, and a combination of a medium grey primer and chrome spray paint. All of which I have on hand. The only thing I don't really have is the case but Harbor freight has something comparable for a lot cheaper. the other brackets and pivot mounts are stuff I can either fabricate or already have too. So easy peasy stuff. Guess having my studio temporarily turned into a wood shop is going to be more useful than I thought.

Does sphere size matter?

Since i saw the Star Wars extras dvd with Tom Knoll with the chrome and grey ball, i wanted to see a tutorial about that. This is a tutorial...with balls.

does insta 360 work properly for HDRI?

@JWPanimation

4 жыл бұрын

Yep, I've made some fairly decent, quick, hdri's using the 360x. Insta 360 x is good if you have a Samsung s8 or s9 because you can control the 360 remotely, not all android phones work though, so check if yours is compatible. Work flow is to shoot raw and with the manual function bracket through your ISO's. Stitch the two hemi's together with Insta's software and use either PTGUI or Luminance (free) to assemble your images into a proper HDRI .hdr or .exr.

Why is that HDRI is a JPG????? You can't light a scene with 8 bit jpg

because of you I had to go back to locations and take all the hdri photos again. Don't listen to him, she doesn't know what she's talking about.

It's unbelievable that a 360 camera with hdri exports a jpeg. Why couldn't it just export hdris with light sources so that you don't have to create your own lights in 3d?

When to balls are more expensive then actual camera.

the balls are so expensive

Hdri tiff😂

@VFXCentral

6 ай бұрын

I know. I was young and stupid. I need to delete this video and update it. lol. We can all laugh together

@NarekManukyan

2 ай бұрын

@@VFXCentral ahahahahha this reply made my day. I am actually interesting in this hdri topic how to make it as it needs to get realistic scene. please tell us if there will be a new video.