How to Master HDRMerge for Raw Exposure Blending

HDRMerge is an open-source, specialized software program designed to combine multiple bracketed RAW exposures into a single, 32-bit floating-point Digital Negative (DNG) raw file. Unlike traditional High Dynamic Range (HDR) programs that immediately compress the colors (tone-mapping), HDRMerge builds a master raw file using only the cleanest, least-noisy pixels from your exposure sequence. This preserves extreme highlight and shadow detail, giving you maximum flexibility when you later edit the file in software like RawTherapee or Lightroom.

The primary goal of a “Flawless HDR” tutorial using this workflow is to bypass the fake, over-saturated, crunchy look often associated with old HDR software, creating completely natural-looking photographs with impossible-to-capture light balance.

Here is a step-by-step master tutorial to create flawless HDR images using HDRMerge. Phase 1: Capturing the Source Shots Flawless HDR relies heavily on how you take the pictures. HDR Merge Made Easy: Master Affinity Photo in Minutes!