Convert 3FR to BMP

The 3FR file extension denotes a proprietary raw image format developed by Hasselblad for its H-system and V-system digital camera backs. Structurally based on the TIFF/EP standard (ISO 12234-2), it contains unprocessed sensor data captured via the Bayer filter mosaic, utilizing a custom lossless compression algorithm to preserve 16-bit color depth. Unlike standard raw files, 3FR files are designed to be converted into the Hasselblad 3F container (FFF) via the Phocus software ecosystem to fully embed color calibration and lens correction metadata.

Due to its proprietary nature, native OS support for 3FR is limited without specific codec packs. The primary method for accessing these files is Hasselblad's proprietary Phocus software or the Adobe Creative Cloud suite (Photoshop and Lightroom) using the Adobe Camera Raw plugin. For viewing without editing, users on macOS can utilize Apple Preview (if the specific camera model is supported by Core Image), while Windows users may require the Microsoft Camera Codec Pack or third-party viewers like IrfanView.

The BMP (Bitmap) format, formally known as the Device Independent Bitmap (DIB) file format, is a raster graphics standard developed by Microsoft for the Windows operating system. The file structure consists of a file header (BITMAPFILEHEADER), an information header (typically BITMAPINFOHEADER), a color table, and the pixel array. Data is stored as a grid of pixels with color depths ranging from 1-bit to 32-bit, typically uncompressed, though the format supports lossless Run-Length Encoding (RLE4 or RLE8) and Huffman 1D compression for specific bit depths.

Due to its simplicity and documentation as a core Windows standard, BMP files possess near-universal compatibility. They can be opened natively by virtually all image viewers and web browsers across Windows, macOS, and Linux without additional software. Standard utilities include Microsoft Paint, Apple Preview, and Windows Photos. For advanced manipulation, pixel-based editors like Adobe Photoshop and CorelDRAW are recommended, though the format is rarely used for complex editing due to its large file size.