|My new 720p Teacup and Spoon render. Click for full size!|
That image is the unmodified PNG that popped out of my renderer, but having the OpenEXR version (or any HDR or RAW format for that matter) would allow me to edit the image in the future without losing appreciable quality. I could even change the exposure. To illustrate this point, here are the EXR version and the LDR version, each with their exposures lowered two stops in Photoshop:
|HDR OpenEXR version with exposure lowered two stops.|
|LDR PNG version with exposure lowered two stops.|
Notice that the highlights (notably the ones at bottom left corner of the spoon) that were clipped in the original LDR version (at the top of the post) have now lost all detail in the adjusted version. But in the HDR version, new detail has been revealed.