Dynapik offers a free online tool to change image types - no need to download anything. It's quick and easy to use. You can change your FFF images to PGX format. This tool works for both professionals and casual users. Convert your images to PGX in seconds.
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Hasselblad RAW Image
The gold standard for medium format digital photography, delivering unmatched color accuracy and dynamic range.
FFF (Hasselblad Flexible File Format) is the proprietary raw image format used by Hasselblad's legendary medium format digital cameras and scanners. Unlike consumer raw formats, FFF files are designed to hold the immense amount of data captured by large medium format sensors—often exceeding 100 megapixels—with zero compression artifacts. An FFF file is typically the result of importing a native '.3FR' capture into Hasselblad's Phocus software. During this import, the file is wrapped with specific calibration data unique to that exact camera and lens combination, as well as Hasselblad's Natural Colour Solution (HNCS) profile. This ensures that the image provides the most accurate starting point for professional retouching.
The FFF format is a container for uncompressed or losslessly compressed raw sensor data. It supports 16-bit color depth per channel, allowing for a theoretical 281 trillion colors, which is essential for capturing subtle tonal gradations in skin tones and landscapes. Technically, an FFF file contains the raw Bayer pattern data from the sensor, along with extensive metadata including exposure settings, GPS data, and copyright info. Crucially, it also embeds 'opcode' lists—instructions for lens correction (distortion, chromatic aberration, vignetting) that are applied non-destructively by the raw converter. The format is optimized for the Hasselblad Phocus workflow but is widely supported by third-party professional imaging software.
Hasselblad introduced the FFF format alongside its transition to digital imaging. As the company moved from film backs to fully integrated digital cameras like the H-system and later the X-system, they needed a format capable of handling the massive data rates and quality requirements of medium format photography. The format has evolved to support increasing resolutions, from the early 16MP backs to modern 100MP+ sensors. It remains a cornerstone of the high-end commercial photography industry, synonymous with the 'Hasselblad Look'—a distinct rendering of color and contrast that many photographers prize.
JPEG 2000 VM Uncompressed
A single-component test format for JPEG 2000 verification.
PGX is an extremely simple, uncompressed raster format created specifically for the development and testing of the JPEG 2000 standard (ISO 15444). It is defined in the JPEG 2000 Verification Model (VM). Its purpose is to store a single component (channel) of an image with potentially high bit depth and signed/unsigned values, without the complexity of a full image container.
A PGX file represents one image channel (grayscale). It starts with a minimalist text header identifying the endianness (`LMS` or `Big`), the sign (`+`/`-`), the bit depth, and dimensions. The raw pixel data follows immediately. It is effectively a raw dump of a single image plane.
Developed by the JPEG committee during the creation of JPEG 2000. It allowed researchers to test wavelet compression algorithms on raw data without worrying about file headers or color transforms.
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