Here are example crops at 200% of the three methods: If even Markesteijn 1-pass is producing artifacts, the 3-pass variant will offer a slight improvement at the cost of twice as much processing time again.

Markesteijn 1-pass is a vast improvement over VNG, though it is also twice as slow. It can produce artifacts in fine detail and at sharp edges.Д¬licking on VNG will show you some higher quality choices: If you are a pixel peeper, or are making large prints, you may not be happy with VNG. For producing images for screen resolution, it should be great. This is a decent quality and relatively fast method. The current default X-Trans demosaicing is done via a VNG demosaic. The вЂњmethodвЂќ sets how darktable processes what the sensor sees (a mosaic of red, green, and blue) into a color image.

For Bayer images, the module looks something like this:ДЇor X-Trans images, you will see a simpler set of options: The demosaic module has different options when you are working with an X-Trans image. There will be more technical information about this processing in a second blog post. The X-Trans sensor uses an exotic design (unlike the Bayer pattern which is in most cameras), and hence darktable must use different math to process what the sensor records. There are a few differences, though, in the case of the X-Trans sensor. Using darktable with Fujifilm cameras is similar to using it with any other cameraвЂ™s raw files. Previously, darktable would fail to read RAF-type raw files produced by these cameras. There is now a development branch of darktable with experimental support for raw files from many recent Fujifilm cameras.

Darktable j2k vs jpg