The way the red, green and blue elements are arranged on the filter is in a very specific pattern. Think of it as kind of like how an ink jet printer makes an image, from individual colour dots of ink, only it works in reverse. Once you know the pattern of red, green and blue elements that make up the colour filter and how they’re laid out, you can use this information, combined with the brightness data from the sensor to reconstruct a colour image. These let only hight of a certain colour through to the photosite underneath, so while the photosites are just capturing light, it is light that is filtered so that it only contains one of the primary colours. This filter is made up of a grid of colour elements, each consisting of either red, green or blue. The colour comes from the filter that’s placed on top of the sensor. They don’t actually capture colour information. These photosites just capture the amount of light hitting the sensor at that point. The light sensitive electronics measure the amount of light falling at each of the sensor elements called “photosites”. With the exception of Sigma’s Foveon sensor, most image sensors contain a single light sensitive layer which is placed under a colour filter array. The first thing to understand is how the sensor in a digital camera captures image information. This may be a little geeky for the average person, and you may want to skip over this section if you already know this information, however, you may still find this useful. To fully understand what’s going on when you convert a RAW file with X-Transformer it helps to have a basic understanding of how sensors capture information, how RAW files work, and how the DNG format works. By using Iridient X-Transformer, you bypass this stage of the development process and are therefore able to use Lightroom as normal, but still get the advantage of using an alternative raw converter. It is this process that is more than likely responsible for the image issues that some people don’t like in Lightroom. Some of this can be alleviated by sharpening and other techniques, however, the root of the problem is at the heart of the processing that Lightroom does when it converts a RAW file to a normal image file. They may also exhibit false detail on certain types of patterns in an image. Specifically, Fuji files processed in Lightroom can have problems with fine repetitive detail being smeared and with edge artifacts on fine detail. Many Fuji X-Trans shooters are unhappy with how Lightroom processes Fuji RAW files. “Why would I need to do this” you might be wondering? If you're reading this you may already know the answer to that question, but let me elaborate anyway. It effectively lets you use Iridient’s decoding engine in Lightroom. This way, when you import the resulting files into Lightroom, you’re bypassing the Lightroom RAW decoding process, but you are still able to use the files as if they were raw files. This process converts the RAW data to RGB data but retains the advantages of using a RAW file, such as highlight recovery and so on. The software converts Fuji X-Trans RAW files to DNG from the native RAF, and during the process demosaics the images using Irident’s own engine. Iridient X-Transformer is an application from the makers of Iridient Developer. I’m a firm believer in using what works for you, so don’t just take my word for it and try it for yourself. I am not involved with the developer of this software in any way, so it doesn’t matter to me if you don’t like it or don’t see the need to use it. It’s much better that you make up your own mind about whether or not the software is worth it for you, as it’s as much about personal opinion as it is about anything else. Please note that I’m travelling at the moment and so I don’t have access to my complete photo library, so I can’t post any comparisons, but you can download a trial version and try it for yourself. So here is an extract from my X-Transformer book where I outline what the software does and why you might want to use it. I had thought that most people understood what the software did, and why you might want to use it, but as that doesn’t seem to be the case I thought I would clarify it a bit. I got a number of questions after posting this, with a number of people still unsure as to why one would want to use this software in the first place. I recently posted a video about processing a photoshoot that I did with my Fuji X-Pro 2, and in that video I used Iridient X-Transformer to convert the files to DNGs.
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