Render Layers corrupted when saving as png

[Darlene_O]

Hi,
I am saving my rendered images out as PNG to save disk space. Lately my render layers are saving as corrupted images. My main image looks fine. When I save as a TIF the layers are OK, it's just PNG problem, but I need to find a solution. See attached image.

[joconnell]

Not an answer to your problem but try exr files - there's a lot of different compression options, especially with the option RE render element, and they come out tiny!

[vlado]

Are you saving from the V-Ray VFB or from the 3ds Max output?

Best regards,
Vlado

[Darlene_O]

Hi Vlado,
Not from the VFB. Just regular 3DS Max output.

[vlado]

Ah ok. Do you have the 3ds Max bitmap pager enabled or disabled? Are you saving to 8-bit or 16-bit PNG files? Maybe switching the output to a different format for a moment (e.g. JPG) and then back to PNG will help.

Best regards,
Vlado

[Darlene_O]

Hi Vlado-Yes the bitmap pager is enabled. I was saving to 8-bit. Strange because I am having this trouble on 2 different machines. We are rendering very large-about 8000 pixels wide. I will try to switch back and forth again and see if that works.

[vlado]

If you are rendering large images, then I'd recommend going through .vrimg files; it tends to be more robust in general.

Best regards,
Vlado