Messages

1

[Max] I need help! / Re: Alfa channel isn't completely transparent

« on: 2017-08-13, 09:17:01 »

Hi,
Thanks Maru but this the solution you suggested is problematic - it disables all the hdr reflection from the scene materials.
I'm trying to add another scene with exactly the same problem on my side - i used an HDR to illuminate the scene and located it in the environment map Background.
You can see that the horizon line is visible behind the glass in the back of the room - there is nothing behind it.
So far all is normal - but when i save it as PNG i see differences of opacity above and beneath the horizon line (i understand it can't be 100% transparent  because the glass windows ) - but i wish i could get an equal opacity background so i can replace in on PS without getting that influence on the new background -this problem only occurs when using HDR!

Thanks again.

2

[Max] I need help! / Re: Alfa channel isn't completely transparent

« on: 2017-08-09, 09:21:30 »

Hi,
Basically you are saying that if i want to replace sky (a pretty common thing in interior images) i have to use full dome HDR, so that the alpha will be fully transparent ?
What is your ideal workflow replacing sky if not ?

thanks again.

3

[Max] I need help! / Re: Alfa channel isn't completely transparent

« on: 2017-08-08, 11:45:03 »

The outside railing inst the problem - i have marked inside the attached picture the problematic zone.
Hope is explains the point...the problem isn't related to glass material or any object because it's an outside model area empty from objects.

thanks again.

4

[Max] I need help! / Re: Alfa channel isn't completely transparent

« on: 2017-08-08, 11:09:17 »

thanks for your help.
I will try to clarify more the point - I'm trying get an alpha channel - not anything complicated.
It's clear to me that the glass planes affect the alpha - and it is a bit greyed out because it influences the alpha - i am not looking to bypass this, I'm just looking for to get rid of the horizon line cutting the alpha into two different opacity zones.


pokoy - what do you mean by "specify alpha contribution by material in the material's Advanced rollout " - in the glass material ?

5

[Max] I need help! / Alfa channel isn't completely transparent

« on: 2017-08-08, 10:15:10 »

When using HDR as environment map the Alfa channel isn't completely transparent (beauty and passed saved in png format)
A darker area beneath the horizon line appears on the image, and make in impossible to replace background.

Your help needed...
Thanks
Lior.