The Secrets of Photorealism

Discover the science to making believable photorealism, and why Toy Story 4 gets everything right.

"The Secrets of Photorealism" by Andrew Price @blenderguru
Blender Conference 2022

#BCON22 #b3d

[duckisduckcluck]

He's got some great points, I think he's gonna be big in the Blender community someday.

[vins]

I like the part where guru said "it's blender time" and blended all the audience.

[stibbits]

19:25 The shutter value is the percentage of the frame duration that the shutter is open for. At 0.5 shutter value and 24 fps the exposure duration is 1/48th of a second. It's similar to the "shutter angle" for a motion picture camera, but expressed as 0-1 instead of an angle.

[mckeeverspruck]

Andrew quickly letting everyone know that he's excited about the laser pointer was the most Guru thing ever.

[TrentisN]

The motion blur checkbox is actually there if you just want Blender to crash when rendering.

[uploadsnstuff]

Andrew my man, you're absolutely a beacon of knowledge in the 3D world. Not enough thanks can be given to let you know how much good you've done.

On another note : when wearing chinos that tight, absolutely empty your pockets.

[daveSoupy]

I was actively working on a project while watching this and those little things he said to do made a giant difference already

[hanktremain]

That default 0.5 motion blur isn't "made up" at all - It is half the frame rate (also known as a 180degree shutter).
A bit like the specular slider on the principled BSDF - you don't want to change this.
I think Andrew is coming at this from a stills photography background, where adjusting shutter speed to account for light is acceptable in most cases - however this is not so for moving image. One of the most common mistakes a novice video creator makes is to shoot with a random shutter speed. You should always aim to shoot with a shutter speed half that of the frame rate you are shooting at if you want natural looking motion - Change the ISO, aperture and amount of light in your scene to compensate for exposure, not shutter speed when shooting motion.

[rasalgooch]

Congrats to Mr Price for being so successful in the blender community

[yugi]

Damn Andrew is so happy; you can see it in his pocket.

[im_Dafox]

That "lamp-face-focus" example is going to change my 3d renders understanding on its own. Thanks a lot for sharing this amazing talk :]

[ConradSly]

Was really nice to return to this subject!
A few notes:
there is a way to have multiple planes of focus in a real camera by using a split diopter, which some films have used to the same effect as in Toy Story 4, so even though it seems to go against practical real world situations with a real camera, it's actually a real effect.
Metallic surfaces do have albedo, it's just that most of the time those albedo values are quite dark. Pure silver for example has a fairly bright albedo if you cross polarize all the reflections away.
Anamorphic lens actually do the opposite of what he described, they capture twice the width in a compressed/squeezed format, and you stretch it back out/desqueeze it in post. The ovals are produced by cylindrical lens elements at the end of the chain of lens elements, as opposed to spherical elements in lenses with circular bokeh.

[qubafootbag]

Always pleasure to listen to Andrew's speeches, thank you for uploading

[roguehydra]

Of all of this, and I learned a lot from it, my absolute favorite part was the tiny little bit you spoke about Dune. I was GENUINELY wondering what they did to get that very natural motion blur. Good to know! Really appreciated that tiny little tidbit.

[MichaelHickmanD]

These are great points! I remember using the camera tricks majority of the time, but nothing can take away from the use of lighting to create cinematic scenes.

[toufiquzzaman_sabbir]

The reason I love Andrews (Andrew Krammer, Andrew Price); Explained nicely & easily! 💚

[IIIspirit]

The man that brought me over to Blender way back when, thanks again. 👍

[bastian]

That slight nervousness in the beginnings. Just goes to show how passionate Andrews is about CG :))

[immortalmaps]

The man the myth the legend, Andrew Price

[badonsart]

wow, I started with Blender years ago, with a version that today people call vintage (earlier than 2.69). There was not much tutorials that time, community was in early stage, most of the stuff u had to figured out on your own. Despite all the struggle, I enjoyed it very much, and at the same time was quietly dreaming that one day will be able to buy this expensive studio-standard software.
Even though for the last few years I neglected Blender, been following all the new versions that's been released, and also learned so much from Andrew's videos. Still enjoy modelling and now even getting into animation. I must say, it's amazing how the community has grown over the years and overwhelmed by changes that all developers provided. I'm too old to find a job in industry, but it's so heartwarming that Blender gives so much opportunity to all people that are interested in 3d and digital art - for free.
You guys are truly changing lives, many thanks and happy blending!