Sigma RAW to PNG Converter
Develop Sigma Quattro, SD, and DP series Foveon RAW files into uncompressed, lossless PNG master plates.
Format Comparison & Technical Specifications
| Specification | SIGMA-RAW | PNG |
|---|---|---|
| MIME Type | - | image/png |
| Type | - | raster |
| Compression | - | lossless (DEFLATE / LZ77 + Huffman) |
| Standard Specification | - | W3C PNG 3rd Edition |
| Magic Bytes Header | - | 89 50 4E 47 0D 0A 1A 0A |
Format Overview & Applications
Sigma cameras hold a revered status among landscape, fine art, and macro photographers due to their unique Foveon multi-layer direct sensors. Handling proprietary X3F raw files across modern design teams often creates friction, as many tools cannot open X3F directly. This unified Sigma RAW to PNG converter unlocks your Foveon exposures, exporting uncompressed, lossless PNG master plates with zero loss of chromatic fidelity.
Technical Specifications & Codec Breakdown
Our shared LibRaw WebAssembly engine resolves proprietary Sigma Foveon container structures, processes sensor data via LibRaw WebAssembly and writes a standardized lossless PNG graphic.
OS & Browser Compatibility
Accepts all Sigma raw files (.x3f). Outputs universal PNG images compatible with all operating systems and professional creative software.
Useful info
Export Sigma Foveon raw captures to lossless PNG to provide VFX matte painters and composite artists with pure, un-interpolated color plates.
Format Comparison & Technical Specifications
A batch of 4 Sigma DP Merrill raw files (180 MB) converts into 130 MB of high-fidelity lossless PNG plates in approximately 2.8 seconds.
Frequently Asked Questions
Which Sigma cameras are supported?
All Sigma cameras using Foveon sensors, including SD Quattro/Quattro H, SD1/SD15/SD14, and DP1/DP2/DP3 Merrill series, are supported.
Does converting to PNG maintain Foveon color accuracy?
Yes. Full RGB color data is preserved without chroma subsampling or compression degradation.
Are files uploaded to external servers?
No. Conversion runs 100% locally in your browser memory via WebAssembly.