The Phocus 4.x manual Hasselblad hasn't written. Hasselblad's official Phocus documentation covers version 3.8. Phocus 4.x introduced HDR capture, the X2D II workflow, the HNNR noise-reduction pipeline, the new Adjustments stack, and a redesigned export model. None of these are documented anywhere outside the application itself; this guide closes the gap. Eighty-three topics, organized the way you actually use the software: - Import workflow: CFexpress, USB-C mass storage, tethered capture, the Capture Sequencer - 3FR vs FFF: what each format is, why renaming one to the other doesn't work, when 4.x lets you skip the conversion - HNCS color science: what it does, when it gets applied, why a White Balance change triggers a full reprocess - HNNR noise reduction: how it builds a new RAW and sidecar pair, system requirements, where it belongs in the workflow - Highlight Recovery, Shadow Fill, Exposure (algorithm versions V1 to V4), and how Phocus's tools differ from Lightroom and Capture One - Export: TIFF for Capture One handoff, DNG limitations, JPEG quality gotchas, PPI and resolution fields explained - Bit depth on the X2D II: when you get 16-bit, when you drop to 14-bit, what the noise floor means for editing headroom - HDR end-to-end: enabling capture, the HNCS HDR trilemma, Ultra HDR JPEG export, Instagram upload, display calibration, plus current 4.x limitations and workarounds - Tethering, leaf-shutter sync, flash compatibility, custom workspaces, output presets, sidecar internals Written for X System and X2D / X2D II owners by a working fine-art photographer who shoots Hasselblad daily and spent 12 years building infrastructure at Meta. Empirically tested against the actual application, not paraphrased from marketing copy. Companion to the free Tech Behind the Frame blog. Updated for Phocus 4.1.2.