Quick take: This comparison is about finished prints as well as pixels. I tested native resolution, enhanced X-T5 files, and ISO 8000 images, with downloadable samples so you can make your own comparison.
How I compared the cameras
I printed the test images at 17 × 22 inches on Canon Pro Luster paper with a Canon imagePROGRAF PRO-1000. The GFX 100S used an adapted Sigma 105mm f/1.4, and the X-T5 used the newer XF 56mm f/1.2 WR. I tried to match framing and distance, then cropped for the same print shape. This is a practical comparison of two kits, not a perfectly isolated sensor test.
What changed in the prints
At ISO 100, I found the differences much smaller in the prints than when inspecting pixels on screen. The native X-T5 file already looked excellent at this size, and increasing its resolution did not create an obvious improvement to my eyes in that print.
At ISO 8000, the X-T5 showed more noise, and Lightroom noise reduction at an amount of 20 made a visible difference. The GFX frame in that part of the test was slightly back-focused, so it should not be used as a clean sharpness comparison. Download the RAW files, exported JPEGs, and photographs of the prints to judge the examples yourself.
Hey everyone. Here are the results of my image quality testing between the GFX 100s and the Fuji X-T5.
You can Download the RAW and Jpeg Sample Images Download here So you can draw your own conclusion.
For this test, I used the GFX 100s with the Sigma 105mm f1.4 (Fringer GFX-EF Adapter was used) On the X-T5 I used the Fuji 56mm f1.2 WR. These seemed to be the closest focal lengths for the field of view and the depth of field was pretty close. My main goal was to keep the same distance from my subject. I cropped 22x17 and recomposed the crops so the images would look as close as possible for print. I used the Canon Prograf-1000 with 22x17" Canon Pro Luster Paper and Ink Owl's refill kit for the ink.
Resolution Comparison When Printed
For the first test, I exported the prints in full resolution and then I also added in an enhanced Super Resolution for the X-T5 changing the original pixel ratio from 5152 x 6667 pixels to 10,304 x 13,335 pixels. The GFX 100s image was 7936 x 10,270 pixels. These were the dimensions after exporting to jpeg and cropping for print.
In this link you can access the RAW images, the Jpeg before-print images, and then images of the actual prints. So please go and check them out so you can find your own results.
My thoughts are that the GFX provided me with a really fun perspective that stands out and is native high resolution. The X-T5 provides plenty of resolution and can be enhanced to take it even further. This is not a focus test review but I do find that the X-T5 is a much much easier camera to use based on a much better AF system and it is so compact. These are just my thoughts and this test is to help you decide what works best for you.
High ISO Comparison When Printed
For this second test, I wanted to compare the high ISO capabilities when printed. I know that the GFX is the best high-ISO performer when looking at pixels, but I wanted to see what happened when I print them.
I captured these images at 8000 ISO and 1/160th. The GFX 100s had the 105mm @f1.4 and the X-T5 had the 56mm @f1.2. I also used the Enhance feature in light for noise reduction at 20%. So you can see all three images. The room was really dark with some available window light. Use the link above to download the RAW images, Edited Jpegs, and photos of the prints to draw your own conclusion.
