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I have a Blender scene with a Sun mesh and a Corona mesh around it. The Sun mesh looks as intended when I render the image with no alpha (black background). However, when I try to render a transparent image, the Corona's appearance fades away. I need help understanding why this happens and how to preserve the intended look of the Sun and Corona in a saved transparent image (if, at all, possible). Any advice or suggestions would be greatly appreciated!

Upd: I added the project file. The render engine is cycles, no compositing.

The blend file:

Render (viewport): enter image description here

Transparent PNG: enter image description here

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    $\begingroup$ Search “PNG” here. It’s a broken encoding. $\endgroup$
    – troy_s
    Commented Jul 23, 2023 at 15:02
  • $\begingroup$ There can be many reasons. Please answer atleast a few of the following questions. Which render engine? Can you provide the screenshot of your shader nodes as well? Have you done any compositing work? If yes can you also share a screenshot of those nodes as well? If it's possible best way is to share the file itself.(You can use blend-exchange for that) $\endgroup$
    – The Kalaakaar
    Commented Jul 23, 2023 at 15:02
  • $\begingroup$ Added the file and answered @Akshay2005 questions. Apologies for the inconvenience. $\endgroup$
    – superpav
    Commented Jul 23, 2023 at 15:13
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    $\begingroup$ blender.stackexchange.com/questions/41574/… blender.stackexchange.com/questions/32900/… blender.stackexchange.com/questions/222837/… blender.stackexchange.com/questions/34002/… blender.stackexchange.com/questions/43977/… $\endgroup$
    – Duarte Farrajota Ramos ♦
    Commented Jul 23, 2023 at 16:28
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    $\begingroup$ @DuarteFarrajotaRamos, apologies for the inconvenience. Indeed, I didn't search for the similar issues here thoroughly, mainly because I was struggling with articulating a search request. Some of these titles refer to color desaturation or semi-transparent volume which didn't occur to me as a valid search request because my corona mesh is not a volume, nor did I think about it as a color desaturation issue. I thank you kindly for the links, they should probably help. $\endgroup$
    – superpav
    Commented Jul 23, 2023 at 17:18

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