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I'd like to create a product shot like the following images for a client:

enter image description here

enter image description here

I'm relatively new to Blender, I don't know that much about render passes.

What I would like to do is render the bottle, with the reflection with a transparent background. I do'nt know if this is possible, if its not, maybe there is another way to get this result. Please keep in mind that I'm new to this program.

Duarte Farrajota Ramos
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Touta
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  • In Cycles you it should work, in Eevee you need to add a Light Probe > Reflection Cubemap, see here: https://blender.stackexchange.com/questions/190642/how-do-i-get-proper-reflections-eevee/190650#190650 – moonboots Nov 11 '20 at 10:30
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    Please prefer using the image tool of this site to provide images. If not your question has no mean when your link is no more available. Thanks – lemon Nov 11 '20 at 10:41
  • The reflections on the glass or on the ground? Please describe in detail what you'd like to achieve and what you have tried to far. Please read: https://blender.stackexchange.com/help/how-to-ask – brockmann Nov 11 '20 at 10:59
  • I tried to tidy up your question and added the gist of your comment to it, hope that's fine @Touta In the meantime I recommend take the tour to learn how this site works: https://blender.stackexchange.com/tour Thanks. – brockmann Nov 11 '20 at 11:23
  • Does any one know how to do this? I want to render the ground reflection with the product only without rendering the ground... Like a shadowcatcher, but for reflections – Touta Nov 11 '20 at 12:00
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    https://blender.stackexchange.com/questions/107757/how-to-make-material-like-shadow-catcher-but-for-reflectionnot-shadow – Duarte Farrajota Ramos Nov 11 '20 at 12:01
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    Does this answer your question? How to make material like shadow catcher, but for reflection(not shadow)? – batFINGER Nov 11 '20 at 12:09
  • Kind of... but the background and plane isn't transparent? correct me if I'm wrong. @batFINGER – Touta Nov 11 '20 at 12:13
  • Probably something from here is also a good option: https://www.youtube.com/results?search_query=blender+render+reflection – Emir Nov 13 '20 at 02:01
  • I know this isn't an exact fit and probably way too complicated for your specific task, but this tutorial should cover pretty much everything for rendering and compositing with glass and real footage. Also you can render glass with alpha by enabling the Transparent Glass checkbox in the render settings. – Robert Gützkow Nov 14 '20 at 12:22

1 Answers1

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Not an answer strictly... but...

enter image description here

Use a mirror modifier:

enter image description here

Works for Cycles and Eevee ; )

You can improve it for instance using UV parameters of the modifier.

If you shift its U to 1:

enter image description here

that can give a clue that you can use in the shader, to obtain this for instance:

enter image description here

to use it you can make a node group that you can plug into the alpha input of the principled BSDF (node group as you may have several materials).

enter image description here

The top line uses UV X coordinate (U) to look if under 1 (the mirrored part is over 1 because of the parameter in the modifier).

The bottom line uses Z coordinate to tune a progressive value from 1 to 0 as Z goes down.

lemon
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