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Arnold Compositing Issue

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Message 1 of 3
todd21st
208 Views, 2 Replies

Arnold Compositing Issue

here's a download link to the source files in case anyone would like to have a look see and follow along to what i'm about to describe;

https://we.tl/t-EFosO9I1n6

Software;
3ds Max v 24.2.0.2334
Arnold for 3ds Max v 5.0.1.4
Photoshop v 23.0.2
Premiere Pro v 22.0.0

in the bottom right viewport you'll see the PhysCamera001 that's set up to match the video camera. in the scene there's the cookie, cup & saucer, and a plane to represent the approx. level of the table. in that viewport there's a PNG loaded into the scene which is just a still frame from the video to make sure all the elements line up.

if you go to frame 114 and render this view you'll see all of the scene elements with nice subtle shadows being rendered. there's a clearly visible shadow for the cookie and a shadow beneath the saucer. the plane for the table has a shadow matte connected to a map to material. when looking at the alpha channel for this rendered view it looks like it should composite with the shadows just fine.

so now open photoshop and bring in the IMG_3866.00_00_00_00.Still001.png as a background and on the layer above bring in the rendered PNG image you just rendered (which should be saved with an alpha channel). instead of getting nice dark shadows for the cookie and under the saucer i get these weird bright white shadows showing up. same thing happens when i bring both images into premiere and therefore when i bring in the entire rendered sequence.

i'm just guessing this might be a gamma issue? i always have my gamma correction set to 2.2. for every other work flow this has always worked out well. since autodesk has switched 3ds Max's direction from Mental Ray to Arnold i'm still getting the hang of working with the new pipeline. for the life of me i can not figure this out.

i'd be super stoked if someone could take a look and let me know what i'm missing.

thanks in advance.

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Message 2 of 3
CiroCardoso3v
in reply to: todd21st

Any chance you can archive this scene? I have missing HDRIs and other elements that make it difficult to see what is wrong.

Lead Enviroment Artist @Axis Studios

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Ciro Cardoso

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Message 3 of 3
todd21st
in reply to: todd21st

my apologies. i completely forgot the other elements in the scene! here is a download link to the archived 3ds Max file which should contain everything;

https://we.tl/t-eN3izBRYnx

thanks for taking a look see.

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