Corona Light Material Bug when saved

[filmouta]

Hello

i've made an animation of a car breaking with corona light material. On render it's perfect but when i save the render it gets white dots on the light and i dont know how and why..

This is how it gets after i save the render.. Any suggestions?

[TomG]

Would need more information - do you mean by "on render it's perfect" that it looks as intended in the VFB, but that the result is different when you save the image to a file and open it in an editor such as Photoshop? I'm also not clear if these two images are screen grabs from the VFB, or if they are the results after saving to an external file format. My thought it is related to the image format you are saving to, since Corona images are high dynamic range, it could relate to that. What format are you saving to and what settings are you using?

Also, Max or C4D? Which version of Corona? What are you opening the saved images in (in case you are using EXR or similar)?

[filmouta]

In VFB gets nice result but when i save the image i get those white parts..

I try save in many formats but doesnt change the problem, i've open in windows visualizer. I'm using corona 4.0

[TomG]

Can you share a screengrab from the VFB and one of the saved images for comparison? Can you show a screengrab of what settings you use when saving to say the simplest format, JPG, and include that JPG here? I am not sure what Windows Visualizer is, sorry (a Google search turned up nothing) - is that actually the name of the program? Do you mean PictureViewer, or something else? What happens if you open with Photoshop, GIMP, or some other more standard image editing application?

Thanks!

[filmouta]

Here the 2 on vfb and the jpg, i use the windows photo view to see the image

[Frood]

"img.jpg" - is it the beauty pass or interactive lightmix as jpg? If beauty, please show the beauty pass of the vfb as well...


Good Luck

[PROH]

Bloom & Glare? What happens if you bloom & glare OFF?

[filmouta]

Its lightmix but any render element i get the same white bug =/ light select, beauty, bloom glare..

[filmouta]

I discover where was the issue, i put 0,125 on saturation of tone mapping and that made this problem when i save the render. When i put 0,0 on saturation i can save the way i see on vfb.

Well thats not the perfect solution but it's minor thing..

Thanks for the help everyone!

[Frood]

but it's minor thing..

Hmm, it would be such if it should turn out that it's a Corona 4(.1) issue and gone in v5+. I hope Tom does not let you just go home until clarification :)


Good Luck

[TomG]

No going home for you! ;)

A few things I can think of - if you can test with Corona 5 and see if it still happens, that would be useful. If you can save to CXR, and the CXR loads fine in the CIE and saves from the CIE with the issue when adjusting satuations, sending the CXR would be useful - alternatively, if you can send us the whole scene via private uploader that would be good, as we can test in Corona 5/6 here. The "How to report issues" link in my signature has info on where to find the private uploader.

PS - if you do send CXR or scene, please include a link to this forum thread when you upload it; or if using the dropbox upload method, please post the filename you sent to us here in this thread. Thanks!

[maru]

This looks like an instance of an issue where some color values are outside of the sRGB space.
There is no real solution. The workaround would be to either adjust the materials (e.g. make them less saturated, make lights less intensive, etc) or to save to 32-bit EXR format, open in some other application such as PS, and then re-save from that application.

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