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I downloaded this 3D model of a glass vase and I tried fixing the material in Blender using Cycles as my rendering engine but it looks so different in comparison to the material preview. See screenshots below:

enter image description hereenter image description here

Can anyone figure out why this is happening? If anyone can help me out, I'd greatly appreciate it. Been stuck on this for so long already and I'm getting frustrated. I've tried almost everything but nothing seems to work (such as putting roughness to 0, transmission to 1, using glass bdsf, etc)

jachym michal
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jeline
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    Hello, maybe share your file? https://blend-exchange.giantcowfilms.com/ – moonboots Nov 01 '20 at 09:50
  • Hello :). If I may, what exactly doesn't look right to you? This looks more like lighting issue. Your viewport also seems to be heavily denoised, destroying details. – jachym michal Nov 01 '20 at 10:01
  • @JachymMichal Hi! If you visit this link, you should see an image of how the glass should look like. I was wondering why the glass doesn't look as transparent and as light colored as the material preview. I actually tried adding a nearby light source to see if it was a lighting issue but the object still looked the same. :( i turned off denoising in my viewport right now to see if anything changes – jeline Nov 01 '20 at 10:09
  • @moonboots hi! are you referring to the blender file or just the obj file? :) – jeline Nov 01 '20 at 10:09
  • please share the blender file – moonboots Nov 01 '20 at 10:18
  • @moonboots here you go! https://drive.google.com/file/d/133BvoWJG7k_hXvZZ6XoTSSCV8KTxPg3k/view?usp=sharing

    hopefully all the external files were also packed there. let me know if theres any issues

     – jeline Nov 01 '20 at 10:48
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    in my opinion it looks like it is supposed to, you have several layers of meshes so it tends to make the material more opaque, but if you're not satisfied maybe use another set of nodes in order to give more transparency? – moonboots Nov 01 '20 at 11:06
  • @moonboots alright! thank you so much! :) – jeline Nov 01 '20 at 11:11

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Some things that could help:

  • To brighten shadows inside the glass, add more Transmission bounces
  • For shooting glass (and other shiny objects), use high-contrast lighting
  • Denoiser still needs a lot of samples to avoid artifacts and smudges

3-4 lights, HDRI environment, 1000 Render Samples + Denoiser enter image description here enter image description here

Related:
How to make this glass more realistic?
How to illuminate the darkness inside glass objects in Cycles?

jachym michal
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