Qtpfsgui Is Now Luminance HDR: What Changed & Where to Download (2026)
If you have been into HDR photography for a while, you remember Qtpfsgui. If you are new and just stumbled across the name in an old tutorial, a Linux package list, or a SourceForge page — here is the full story, and where to get the software today.
Yes, It Is the Same Software
There is no fork, no successor project, no “Qtpfsgui vs Luminance HDR” debate to settle. The project started life as Qtpfsgui — literally a Qt graphical interface for the pfstools HDR library — and was renamed to Luminance HDR with the 2.0 release. Same codebase lineage, same open-source license (GPLv2), same developers’ vision: a free, full-control HDR merging and tone mapping tool.
You will still see the old name in a few places: the source code, some Linux distribution packages, and old forum threads. That is just naming inertia, not a separate product.
Why the Rename Happened
“Qtpfsgui” made perfect sense to developers — it described exactly what the program was. To photographers, it was alphabet soup. The rename to Luminance HDR was a deliberate move to give the project a name a human could remember, pronounce, and search for. Nothing about the HDR workflow changed; only the label on the box did. If anything, the rename marked the project’s coming of age: from a developer’s utility to a photographer’s tool.
Where to Download It Now
Get the current release from our download page — Windows, macOS, and Linux builds are all there. Do not go hunting on SourceForge for “the latest Qtpfsgui”: the SourceForge project page still exists as a historical archive, but its builds are years out of date. You would be installing old tone mapping code, old RAW support, and old bugs for no reason.
The same applies to random third-party download mirrors still listing “Qtpfsgui 2.x” — always prefer the official download page.
Can You Still Use the Old Versions?
Technically, yes. If you have Qtpfsgui 1.9.3 or an early 2.x build installed, it will still launch and still merge brackets. But you would be missing over a decade of improvements: newer tone mapping operators, anti-ghosting, batch processing upgrades, modern camera RAW support via current LibRAW, and high-DPI display handling. There is no compatibility reason to stay on an old build — project files and workflows carry forward. Upgrade.
Why Linux Repositories Still Say “qtpfsgui”
This confuses a lot of Linux users, so it deserves its own explanation. Distribution packages were created back when the project was still called Qtpfsgui, and package names almost never change — renaming a package breaks upgrades for every existing user. So your distro may ship a package literally named qtpfsgui or luminance-hdr depending on when the maintainer last touched it. Either way, check the version number: if it is a 2.x release, it is Luminance HDR under the hood. See our download page and Linux install notes if your repo’s build is ancient.
Old Name vs New Name at a Glance
| What | Then (Qtpfsgui era) | Now (Luminance HDR) |
|---|---|---|
| Project name | Qtpfsgui (Qt pfstools GUI) | Luminance HDR |
| Official download | SourceForge project page | luminancehdr.com/download/ |
| Typical version | 1.9.3 and earlier | 2.x series (2.6.0 stable) |
| Linux package name | qtpfsgui (still, in some distros) |
luminance-hdr (most distros) |
| License | GPLv2, free and open source | GPLv2, free and open source (unchanged) |
Ready to actually use it? Our quick-start guide walks through the full workflow — load, align, merge, tone map — and the tone mapping operators guide explains which of the 9+ operators to pick for your scene.
Frequently Asked Questions
Are Qtpfsgui and Luminance HDR the same program?
Yes. Qtpfsgui was renamed to Luminance HDR with the 2.0 release. Same project, same GPLv2 license, same HDR merging and tone mapping workflow — just a friendlier name.
What does “Qtpfsgui” even stand for?
It is a developer-style acronym: a Qt graphical user interface for pfstools (the underlying HDR library). Descriptive for programmers, opaque for photographers — which is exactly why it was renamed.
Is the SourceForge download safe?
The SourceForge project page is the genuine historical home of the project, so it is not malware — but its builds are years out of date. For the current, maintained release, always use our download page instead.
Do old Qtpfsgui tutorials still apply?
Mostly, yes. The core workflow — load bracketed exposures, align, merge to 32-bit HDR, tone map — has not changed. Button labels and a few dialog layouts have evolved since the 1.9.x days, so expect minor visual differences when following a very old tutorial, but the concepts transfer directly.
Which version should I download today?
The latest stable release from our download page (2.6.0). There is no reason to install a 1.9.x or early 2.x build unless you are doing software archaeology.
Luminance HDR is free and open source (GPLv2).