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I have been doing some render test to try and figure out why i am getting banding when using different file types. At the moment i am getting more banding using PNG files 8k uncompressed. Less with the TIFF 8k uncompressed. Sometimes its hit or miss and dependent on the camera and how close or far you are. At the moment they are both 8k 16bit files uncoomplressd. I am loading them in using the images gamma. My max gamma settings in the image bellow and my vray settings also, i am using the SRGB button on the vray frame buffer. Thanks in advanced for any info.
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Hello kriscabrera15
Would it be possible to send us this scene along with the texture files in order to test it in our environment ?
Thank you very much in advance. -
Sure i can, its a 39 MB file could i have the ftp info?Comment
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Can you check against EXR too ?Comment
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here is a test render so far the exr is not showing banding, TIFF 16bit,PNG 16bit,EXR 32bit
EXR on the right, PNG on the left.
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Try using a VRayHDRI texture for the bitmap, and set the interpolation type to Bicubic or Biquadratic - it may help to smooth things out a bit.
Best regards,
VladoI only act like I know everything, Rogers.Comment
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If the issue still persist please write to vray@chaosgroup.com and we will give credentials to our FTP server.Originally posted by kriscabrera15 View Post
Thank you very much in advance.Comment
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that actually did help vlado, just curios though if you know why this would be, is it an image thing or a render issue??Comment
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It's a problem of the 3ds Max Bitmap texture. It uses some fast approximations when filtering 8-bit and 16-bit textures. These are indeed very fast, but at the expense of precision, which leads to the banding. VRayHDRI uses full floats for this, which is a tad slower, but hey - no bandingOriginally posted by kriscabrera15 View Post
Best regards,
VladoI only act like I know everything, Rogers.Comment
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