You can find more of his work on his website, Instagram, and Band Camp. Most interesting paragraph to me is: 'Turn off Sharpening in X-Transformer, but use a medium amount of Colour Noise reduction. Worth a look: Updated Iridient X-Transformer Settings Thomas Fitzgerald 's reason for using SMOOTHER instead of MORE DETAILED seems to be due to the 24K sensor. are free to use, share, and modify-offered to you from the goodness of their respective developers’ hearts.Ībout the author: Jonathan Moore Liles is a photographer, writer, musician, and software architect living in Portland, Oregon. This blog post might be of some interest. apparently just me).įor all practical purposes, the output of the two programs is identical, even under close 1:1 inspection. However, Darktable is not interpolating around the phase detect pixels as it should for this sensor technology, although these single-pixel errors are unlikely to be noticed by all but the most critical viewers. Iridient applies some additional post-processing which cannot be disabled (or is perhaps using a joint-demsoaic/denoise algorithm), while Darktable leaves absolutely all noise reduction, sharpening and other filtering to the user’s discretion. The algorithms employed by Darktable and Iridient produce extremely similar output (so similar, in fact, that they may even be the same underlying demosaicking algorithm). This image was then post-processed through Darktable, applying the same color profile, basecurve, and sharpening (none) as the other images to permit pixel to pixel comparison.ĭarktable’s output was generated by processing the RAF file directly with the Markesteijn demosaicking algorithm (3-pass mode), 2 iterations of false color smoothing (chroma median filter-this amount selected to match the appearance of false colors in the Iridient image), and no sharpening. Iridient output was generated by Iridient X-Transformer (which produces a demosaicked RGB DNG file, not a re-mosaicked Bayer image as is commonly believed) with the following settings: Detailed, Sharpening Off, Luma NR Off, Chroma NR Off, Lens Correction Off. Visual acuity varies as widely as does opinion on the significance of detailed image analysis. Have a cup of coffee (double espresso for me, thanks).Įven with these prerequisites, I’m sure some percentage of you will be squinting at the screen and wondering what the heck I’m talking about. Note: Darktable, dcraw, UFRaw, RawTherapee, and perhaps other Free RAW processors, all use Frank Markesteijn’s algorithm for demosaicking X-Trans images, so similar results can be achieved with any of them, but we’ll focus on Darktable here because it is, in my opinion, the most capable and mature, and the program I use the most personally.īuckle up and get ready for some crops! Put on your reading glasses if you need them. In this article, we will explore the differences and similarities as they relate to image quality, in particular the quality of luminance detail. In this video I take a look at Iridient X-Transformer and how the different Sharpening and Noise reduction settings effect the Fuji RAW files.
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