HBComposer v1.0.7b (CLI) | <– Download link – macOS 11.0+ with Java JRE 11+ (Intel & Apple Silicon) |
HBComposer v1.1.1b (GUI) | <– Download link – macOS 11.0+ with Java JRE 11+ (Intel & Apple Silicon) |


HBComposer is a simple console application which allows you to combine a set of Hasselblad 3FR RAW files into a single one. It outputs a single native non-demosaiced 3FR RAW file containing the result of the combination.
What makes this tool unique and different from the many other solutions available is that it works on RAW files and produces a native composed RAW file. So, the full image quality like Hasselblad Natural Color Science (HBNC) and archival characteristics are maintained. Moreover, since it is still non-demosaiced, the size of the resulting file is minimal, like all RAW images, and it will benefit of better RAW developers that may come in the future.
Currently it supports two operations:
- Frame average
Frame averaging can emulate a long-exposures in any light conditions without the need to have a matching ND filter.
For 100% static subjects, it lowers the noise in shadows areas and increase the SNR (signal to noise ratio).
Here below is an example of frame averaging, where the sea waves are smoothed into each other creating a dreamy foggy effect:

This image above is a frame-averaged composition of 160 shots, each one made at ISO 64, f8 and 0.8s exposure time without any ND filter.
It is produced a RAW image which is equivalent to a 2-minutes long exposure shot with an 8-stops ND filter.
- Frame median
Frame median can help removing moving objects in an image. I often use it for architectural photography.
Here below is an example of frame median, where all people and cars passing by this crossing have been automatically eliminated:

This image above is a frame-median composition of 34 RAW shots, each one made at ISO 64, f8 and 1/10s exposure time without any ND filter.
All moving objects like people and cars passing by have been automatically eliminated in the produced RAW image.
This application is provided as a zip file, and it is still in its beta version. Any feedback about bugs and/or user experience is welcome!
Once unpacked, you’ll find a README.pdf file containing the instructions on how to use it.
NOTE: The application needs macOS (Intel or Apple Silicon) 11+ and a Java Runtime 11 Environment (or more recent) installed on your system.
*** IMPORTANT: I’m not in any way connected with Hasselblad. This tool is the result of my personal research and the produced files
are not guaranteed to be 100% OEM-Compliant ***
LICENSING
This work is licensed under CC BY-NC-ND 4.0
DISCLAIMER
HBComposer is free to use. Please consider donating to my PayPal account to help me further improve this tool and make it more user-friendly.