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Camera RAW requires full image development. This browser engine does not implement it yet.
Sigma X3F needs camera- and file-aware development to produce a rendered QOI image. White balance, exposure, camera colour interpretation and, where applicable, demosaicing determine that rendering. The destination does not retain the original RAW development latitude. No development settings or camera support are implemented yet.
The target can store an alpha channel, but converting an opaque image does not create transparent areas. Removing a background is a separate editing step.
QOI preserves 8-bit RGB/RGBA samples losslessly. Reducing 16-bit data or discarding profiles and metadata before encoding is outside that guarantee. QOI can store its supported image samples without lossy compression. This applies after rendering and sample conversion: it does not guarantee preservation of source precision, colour space or document structure, and cannot undo earlier losses.
The reviewed QOI representation uses 8-bit colour samples. If the source contains higher-precision samples, they must be reduced before encoding, even in a lossless output mode. Rounding, dithering and colour conversion are future engine decisions; lost precision cannot be recovered from this output.
Source
Sigma X3F Raw
Sigma raw capture for compatible Foveon-camera workflows, developed with sensor-aware software.
Explore Sigma X3F format →Target
Quite OK Image Format
A small lossless codec for 8-bit RGB and RGBA images, designed for simple, fast implementations.
Explore QOI format →Sigma X3F needs camera- and file-aware development to produce a rendered QOI image. White balance, exposure, camera colour interpretation and, where applicable, demosaicing determine that rendering. The destination does not retain the original RAW development latitude. No development settings or camera support are implemented yet.
The target can store an alpha channel, but converting an opaque image does not create transparent areas. Removing a background is a separate editing step.
QOI preserves 8-bit RGB/RGBA samples losslessly. Reducing 16-bit data or discarding profiles and metadata before encoding is outside that guarantee. QOI can store its supported image samples without lossy compression. This applies after rendering and sample conversion: it does not guarantee preservation of source precision, colour space or document structure, and cannot undo earlier losses.
Source and target sample models can differ in precision, channel layout, colour space and transfer function. Lossless compression only preserves the samples actually encoded; a precision reduction or colour conversion can already change them. The future engine defines numeric mapping, orientation and colour conversion; canonical depth facts are listed below where available.
Sigma X3F: Capture metadata → QOI: Colour-space flag. Which fields are copied, rewritten or omitted will depend on the future engine; retention is not implemented yet.