Should I upload RAWs or JPGs, and merged or unmerged exposures?
Best results come from shooting JPEG and uploading the unmerged input brackets. This lets AutoHDR replicate the human hand-blending and masking process.
What's accepted
You can upload RAW or JPEG. You can also upload either multiple exposures or already-combined exposures. The recommended path for highest quality is unmerged JPEG brackets.