Greetings fellow photographers! My journey started when I was a teenager (which is a while back). I was fascinated by photographs that my grandfather had taken during the first world war while he was in the front lines, and by pictures of my mother's family some of which dated back to the late 1800's. When I was 19 I apprenticed with a respected advertising photographer in Buenos Aires which is where I was living at the time. At the time I thought I would make a career as a photographer, but life took me in a different direction and I always kept photography as hobby. Never thought I had a particular style but was drawn to portraits, abstract images, and architecture. Had different cameras over the years, and switched from film to digital about 25 years ago. Now I use a Fuji GFX 50sii and I love it. There is something about having a relatively big and heavy tool that feels deeply satisfying. I am now 70 and decided to dedicate myself more fully to taking pictures, and to see if I can turn it into a revenue stream as well. I plan to Focus on Travel with a special focus on Architecture, Urban environments, and Environmental Portraits. I am excited to start this new adventure!
You should be able to use the Expodisc, except the procedure is slightly different than pulling an image from the card. These may help:
https://fujifilm-x.com/en-gb/learning-centre/get-to-grips-with-custom-white-balance/
https://fujifilm-dsc.com/en/manual/gfx50s/menu_shooting/image_quality_setting/index.html#white_balance
Scroll down to the custom white balance section for the second link.