[Ben Waflik]

Works perfectly! I’m so happy I couldn’t believe my own eyes, Dan, thank you so much! Seriously, this expression opens so many doors for me now that I can reset time when I need. I was loosing hope it is possible with keyframes, all those tutorials on triggering time talk about markers only.

I’m also wondering, is this what’s called “function” within this expression? I can sort of understand what I’m reading, except the “n–” part. What does it do? My guess is that it tells to repeat the if statement multiple times. I’d like to learn more about functions, they seem to hold great power, though there isn’t much examples of practical uses of them on the web as far as I know.

Anyway, big thanks to you again, I’ll go checkout that Tip button on motionscript 🙂

[Ben Waflik]

Ok, figured it out myself. If color management does nothing when you turn it off, just install a color profile. I used free tool called “Calibrized”. You can leave all settings as is and just click next until the setup is finished. The main thing is to have a custom color profile applied in Windows color management settings. Calibrize does just that.

[Ben Waflik]

Ofcourse! Thanks for the workaround 🙂

[Ben Waflik]

Hi Andrew. Have you made a tutorial on that? If not, maybe you could just explain in short how to extract delta? Cause I still haven’t figured out how to make a rolling shutter effect. No info in web at all, you’re like the only hope left…
Thank you.

[Ben Waflik]

Sounds a little complicated, guess it’s because I’m away from my PC 🙂 But I’ll def give it a try. Thanks, glad to hear there’s a way without jaginess

[Ben Waflik]

Ben Slavens, I was just looking for it too. Typed “nest” in the keyboard shortcuts panel and found out that it’s Ctrl+Shift+F

[Ben Waflik]

This is simply due to AE’s rendering

Thanks for explaining how Ae renders things, just what I wanted to know!

…simply enable Continuously Rasterize/Collapse Transformations on the pre-comp layer in the main comp…

Yeah, I need to add effects to the precomp so it won’t work.

…apply the Channel > Set Matte effect to matte those out

Well, I could apply a “set matte” effect to my precomp, but then, if I’ll add a glow, say, to the reflection pass, it won’t go beyond the matte I’ve set.

I’ll also add that I don’t usually run into the issue you’re having here when using Unmult through the EXtractoR effect…

But how? I made a test even with plain red and blue solids using “add” blending mode. I applied feathered circular masks to them, precomped and got halo too!

[Ben Waflik]

Here they are. But note that I don’t have problems when using just one pass. It looks as it should either on a transparent or opaque background, I can even safely precomp it and nothing bad happens. The halo only appears when I’m stacking 2 or more layers on top of each other. I’ve also attached the project file

Main Comp: Opaque BG
Main Comp: Transparent BG
Main Comp: PreComped Passes, Opaque BG
Main Comp: PreComped Passes, Transparent BG
PreComp: Opaque BG
PreComp: Transparent BG

[Ben Waflik]

Sure, I will upload all the images asap, thank you for helping me!

[Ben Waflik]

“My guess is that this is the reason you get the dark outline- premultiplied alpha on black.
Here’s a helpful link:
https://docs.autodesk.com/3DSMAX/15/ENU/3ds-Max-Help/index.html?url=files/GU...”

Tudor “Ted” Jelescu, thanks, really helpfull info. But I don’t know how to render out “straight” in 3ds max, I’ll have to find it out.

“Instead you’ll want to use the ‘Unmult’ check box in the EXtractoR effect to interpret the footage as premultiplied, otherwise the assumption made by the effect is that the EXR has a straight alpha.”

Darby Edelen, As you suggested I’ve tried EXtractoR and checked “Unmult”. What it changed is that now, in the render passes precomp, I have clean edges even on a transparent background! Great! But when I switch to the main comp, I see that render passes precomp still has that black fringe.