X3F
X3F camera raw imageUsed for carrying minimally processed sensor output for a raw workflow.
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- image/x-sigma-x3f
Convert X3F to GIF online. See the real camera-raw development and image encoding behavior, preservation limits, and a format-specific acceptance test.
Demosaicing, white balance, tone, orientation, and color interpretation all run against the sensor-oriented X3F data before GIF encoding even starts. What comes out is a rendered photograph, never another untouched camera negative. The Sigma X3F path develops layered Foveon sensor information rather than applying a conventional color-filter-array demosaic used by most camera raws. Because GIF reduces every frame to an indexed palette with only on/off transparency, quality here comes down to color selection, dithering, disposal, timing, and the loop seam — with no audio at all.
Decoded canvas - Sigma camera raw data built around Foveon layered-sensor samples and Sigma metadata. Written image - A frame animation or indexed-color image limited to a 256-color palette.
Used for carrying minimally processed sensor output for a raw workflow.
Designed for short animations and simple graphics.
GIF wins this route whenever its specific mix of compatibility, alpha, animation, and file size fits the destination better than X3F does.
Conventional Bayer-oriented development does not reproduce every Foveon color and detail decision.
Photographs and gradients can band, semi-transparent edges are reduced, and timing may be quantized.
The video-to-GIF path samples frames at 12 per second, caps width at 960 pixels, and drops audio entirely — GIF has no sound channel to carry it.
Compare with Sigma Photo Pro and inspect color, fine detail, highlights, crop, noise, and metadata.
Play the full loop and inspect color banding, disposal between frames, transparency, and the loop seam.