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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.
PNG (Portable Network Graphics)
The web's standard for lossless images with transparency, designed as a patent-free replacement for GIF.
PNG (Portable Network Graphics) emerged in 1996 as a direct response to the patent issues surrounding the GIF format's LZW compression algorithm. Developed by an informal working group and later standardized by the W3C, PNG was engineered from the ground up to be completely patent-free while offering superior technical capabilities. Unlike JPEG, which sacrifices image data for smaller files, PNG preserves every pixel exactly as captured or created. This lossless nature makes PNG the definitive choice for images where precision matters—screenshots, digital artwork, logos, and any graphic with text or sharp edges. The format's support for full alpha transparency (256 levels of opacity per pixel) revolutionized web design, enabling smooth drop shadows, gradient fades, and complex overlays that were impossible with GIF's binary transparency. Today, PNG is universally supported across all browsers, operating systems, and image editing software. While newer formats like WebP offer better compression, PNG remains the standard for lossless web graphics due to its unmatched compatibility and reliability.
PNG uses DEFLATE compression, the same algorithm powering ZIP files and gzip. This two-stage process first applies filtering to exploit the correlation between adjacent pixels, then compresses the filtered data using LZ77 followed by Huffman coding. The result is lossless compression that typically achieves 10-30% size reduction compared to raw pixel data, with some images compressing significantly more. The format supports multiple color types: grayscale (1-16 bits), indexed color with up to 256 palette entries, truecolor RGB (24 or 48 bits), and each with optional alpha channels. PNG's chunk-based architecture allows for extensibility—the file consists of a signature followed by typed chunks containing image data, metadata, and optional features like gamma correction and color profiles. PNG offers two interlacing modes: no interlacing (smaller file size) or Adam7 interlacing, which progressively renders the image in seven passes. While interlacing increases file size by approximately 10%, it provides a better user experience on slow connections by showing a low-resolution preview almost immediately.
PNG development began in January 1995 when Unisys announced it would enforce patents on GIF's LZW compression. Within weeks, an informal group on comp.graphics formed to create a replacement. Thomas Boutell published the first PNG specification draft in March 1995, and after extensive community input, PNG 1.0 became an official W3C Recommendation on October 1, 1996. The format underwent one major revision: PNG 1.2 in 1999 added the iCCP chunk for ICC color profiles and the sRGB chunk for standard color space indication. PNG became an ISO/IEC standard (15948) in 2003, cementing its position as a core web technology. The related APNG (Animated PNG) extension emerged in 2004 but remains unofficial, though it's now supported by all major browsers.
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