ChuckRT Posted February 1, 2022 Share Posted February 1, 2022 (edited) Hi there, recently im trying to use an EXR saved from V-Ray 5.2 and there's something wrong when oppening it, my ID channels (renderID, MaterialID, ObjectId) appears pure white, but theres some info in the channels, if I use tone compreesion or exposure it brings back some information color but only on Greyscale, another thing is that when using composite and try to use the tone compression persona in another channels instead of compress highlights it increases the gamma. Here you can find the file in EXR, the Id channels how are supposed to be and some examples of what im reffering to Shadow Catcher.exr Shadow Catcher.VRayMtlID.tif Shadow Catcher.VRayObjectID.tif Shadow Catcher.VRayRenderID.tif Edited February 1, 2022 by ChuckRT error at upload Quote Link to comment Share on other sites More sharing options...
NotMyFault Posted February 2, 2022 Share Posted February 2, 2022 (edited) You can use the 32-bit preview panel to adjust exposure and gamma. the lightness values of that layer are far outside the regular range (0 to 1). When you reduce exposure to about -7, more colors become visible. PS: I agree, the VRayRenderID layer renders strange (isolated mode, or copy / paste as new document). The top part is always displayed as outblown, no matter what exposure correction use used (32-bit preview, or multiple levels adjustments to limit output white to 1%) With EDR enabled on Mac, it gets rendered blue/green (teal). With EDR inactive, white. When trying to do a screen capture, the capture shows black. Using the Histogram Panel and raising "max" level does not give any insight about lightness above 1.0. Maybe some +infinity values? Edited February 2, 2022 by NotMyFault Quote Mac mini M1 A2348 LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5 iPad Air Gen 5 (2022) A2589 Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps. Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.