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enter image description here enter image description here

The first image is rendered in Maya,

And the second is from Blender Cycles.

Both of them are the same OBJ file imported.

I have two questions :

1. They are the same exact OBJ files but Blender imported version lacks subdivision, eg around the apple logo. If I do subdivide the mesh around it, it gets better. Why is this happening and how I can I prevent this in the future?

2. Why are the textures that show on Maya not loading on Blender? Are they not compatible? If so, what method would you recommend to import exactly like the first image?

Thank you all as always !

Below is the blender version with more subdiv around apple logo.

enter image description here

Here's a link to the download.

https://drive.google.com/drive/folders/1VQgvtY1VR9G3GzzHsXY9szgyYLfUIq1b?usp=sharing

CONQUERER HOON
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    In the first image you can clearly see that a light was added to the scene. If you read about obj files: https://en.wikipedia.org/wiki/Wavefront_.obj_file you'll see that .obj neither supports lights nor complex glossy plastic shaders (to exactly match a product by apple) and even in maya you would have to add the subdivisions as well... Also please only ask one question per post: https://blender.stackexchange.com/help/how-to-ask – brockmann Mar 17 '21 at 13:02
  • But then why does my model look glossy and doesnt lack subdiv in Maya when I import it? Literally its as it is in the first image when I opened it – CONQUERER HOON Mar 17 '21 at 14:14
  • My apologies, I forgot to upload the folder.https://drive.google.com/drive/folders/1VQgvtY1VR9G3GzzHsXY9szgyYLfUIq1b?usp=sharing – CONQUERER HOON Mar 17 '21 at 14:26
  • Anyone interested its VP_Free_Iphone_OBJ.obj – CONQUERER HOON Mar 17 '21 at 14:27

1 Answers1

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Are you using any secret, non-public or industrial light and magic in-house version of Maya?

CG 101

Materials and Lights are unique per render engine and cannot be transferred over easily. Even in 2021, manual tweaking is required to match lights and shaders of different engines since there is still no unified way of describing a shader or lights. MaterialX is quite promising though.

How it really looks like in Blender and Maya

Importing the provided obj file into Maya 2019 and starting the render leads into a black screen because there are no lights in the scene (warning). When importing the obj into Blender and switching the Workspace to Shading on the other hand, gets us a good looking preview instantly:

enter image description here Note: 'Alpha Blend' is enabled for the glass material (requirement for glass in eevee).

Wavefront obj

In the first image you provided, you can clearly see that a light was added to the scene. If you read about obj files: https://en.wikipedia.org/wiki/Wavefront_.obj_file, you'll see that obj is a pretty old geometry file format and neither supports lights nor modern complex glossy plastic shaders in order to exactly match a product by apple:

OBJ (or .OBJ) is a geometry definition file format ...
although still widely used, is outdated and does not fully support later technologies such as specular maps and parallax maps.

However, both DCCs trying to get the most out of the obj file in order to full-fill modern requirements (like the principled shader).

Related: .fbx export why there are no materials or textures?

Subdivisions

Adding subdivisions is not nessessary, the geometry is already pretty bad and messed up. I guess the author applied the subdivision before publishing the model to cover up any mistakes:

enter image description here IMHO the geometry is not intended for any close-up shot of the apple logo. Also Maya's viewport is based on a specular model so glossiness is all over the place.

Further reading: topologyguides.com

brockmann
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  • I am using Maya 2020 and I only added lights to the first image provided, and in Blender I do get the textures like the image on screen and wooden textures but still dont understand why theres a difference when I import to different programs – CONQUERER HOON Mar 18 '21 at 09:02
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    CG 101: lights and materials are unique per render engine and can't transferred over to another package. Read my answer carefully and try to understand what obj is capable of @CONQUERERHOON – brockmann Mar 18 '21 at 09:53
  • Much appreciate your details :) I checked the download source it does say it is for 3DS Max and I guess it just worked for Maya since its also Autodesk program and maybe compatible – CONQUERER HOON Mar 18 '21 at 14:35
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    Also in Maya/Max you'd have to tweak the shaders and add some lights to get a realistic looking Iphone. Since this is a geometry format as mentioned it's not made for any tool. – brockmann Mar 18 '21 at 15:13