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Image Conversion

Convert X3F to TIFF — Free Online Converter

Convert Sigma/Foveon RAW (.x3f) to Tagged Image File Format (.tiff) online for free. Fast, secure image conversion with no watermarks or registration....

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How to Convert

1

Upload your .x3f file by dragging it into the upload area or clicking to browse.

2

Choose your output settings. The default settings work great for most files.

3

Click Convert and download your .tiff file when it's ready.

About X3F to TIFF Conversion

TIFF is the professional standard for maximum-quality image storage and fine art printing. For Sigma's Foveon cameras — which capture true per-pixel RGB through stacked silicon layers — TIFF at 16-bit depth provides the ultimate preservation format. The Foveon's extraordinary per-pixel sharpness, accurate color separation, and three-dimensional rendering quality are maintained at maximum fidelity.

Foveon photographers choose these cameras specifically for per-pixel quality that no Bayer sensor can match. TIFF is the format that preserves this quality investment completely — no compression artifacts, full tonal range, comprehensive color management — in a format accepted by every professional print lab and archival institution.

Why Convert X3F to TIFF?

TIFF at 16-bit with lossless compression is the highest-quality output from any camera conversion. For Foveon photography — where per-pixel quality is the entire value proposition — TIFF ensures zero degradation of the sensor's unique advantage. Every professional workflow accepts TIFF.

Given X3F's extreme third-party compatibility limitations, TIFF provides the highest-fidelity escape format. Fine art labs, museums, publishers, and archives all accept TIFF. The Foveon's medium-format-like quality is preserved at full resolution in a permanently supported format.

Common Use Cases

  • Archive Sigma SD1 Merrill photography at maximum quality in 16-bit TIFF
  • Deliver Foveon photographs to fine art print labs in professional TIFF format
  • Create archival master copies of DP2 Merrill output preserving full per-pixel quality
  • Prepare Sigma photography for museum digital collections in TIFF format
  • Submit SD Quattro photographs to publishers requiring the highest-quality TIFF deliverables

How It Works

The conversion decodes X3F Foveon layer data through spectral color separation, then writes TIFF at 8-bit or 16-bit depth with LZW or ZIP lossless compression. The SD1 Merrill (15.3 MP effective) at 16-bit uncompressed produces approximately 92 MB; LZW reduces to 50-65 MB. The SD Quattro (19.6 MP luminance) produces larger files. ICC profiles and full EXIF metadata are embedded.

Quality & Performance

TIFF with lossless compression is the absolute highest-quality X3F output. At 16-bit depth, the complete tonal range from all three Foveon silicon layers is preserved. The per-pixel RGB sharpness, the accurate color at every photosite, and the three-dimensional rendering that defines Foveon output are maintained with mathematical precision. This is the definitive preservation format for the world's most unique sensor technology.

SHARP EngineFastLossless

Device Compatibility

DeviceX3FTIFF
Windows PCPartialNative
macOSPartialPartial
iPhone/iPadPartialPartial
AndroidPartialPartial
LinuxPartialPartial
Web BrowserNoNo

Tips for Best Results

  • 1Always use 16-bit TIFF for Foveon archival — the stacked silicon layers produce data that benefits from maximum bit depth
  • 2LZW compression reduces Foveon TIFF sizes by 30-40% without losing a single bit of per-pixel quality
  • 3Embed the ICC profile for consistent Foveon color across fine art print workflows
  • 4The Foveon's per-pixel sharpness is best appreciated in TIFF prints at 300+ DPI
  • 5Keep both X3F and TIFF: X3F for potential future decode improvements, TIFF for permanent professional access

X3F to TIFF is the ultimate preservation format for Foveon photography. It maintains the full per-pixel quality advantage of the world's only stacked silicon sensor in a format trusted by the most demanding professional and archival workflows.

Frequently Asked Questions

SD1 Merrill: 8-bit ~44 MB, 16-bit ~92 MB uncompressed. LZW: 30-40% smaller. SD Quattro: proportionally larger due to higher luminance resolution.
For processed images, yes. Keep the original X3F for potential future improvements in decode algorithms. TIFF + X3F is the ideal archival pair.
16-bit for archival and fine art. The Foveon's three-layer capture benefits from 16-bit preservation for color grading and print preparation.
Yes. Fine art labs consistently note that Foveon TIFF files produce prints with sharper detail than equivalent-resolution Bayer camera files.
LZW or ZIP — both lossless. Either preserves the complete Foveon quality. Never use JPEG compression in TIFF for Foveon archival.

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