There are a couple of comparisons on youtube of people comparing MF Technical to FF, unfortunately most of them don't really know what they're doing and just end up with similar images. MF Technical is very hard to use, harder than 5x4 film because with a digital back - the tolerances for focus and sharpness are so tiny - if anything is slightly off in terms of the setup, focus, or movements - the image won't be as good as it can be. You have to be a real technician to get the best out of them - it takes a lot of practice.
With Rodenstock Digaron lenses - there is literally no way you can physically get a sharper image, some of those lenses are actually used by planes for aerial photography and reconnaissance - because the MTF charts are so good - they're sharp corner to corner, and I mean
seriously sharp.
Regarding sensors, the newer CMOS backs have now overtaken the older style CCD backs, however some people (including myself) feel that some of the CMOS backs make images look a little too smooth - the CCD backs had a tendency to give images a really nice organic look - again, like film it's hard to explain, the old (10 years?) Phase One P65+ is a good example of that - that back takes really really nice images, sure it's dynamic range sucks compared to an A7Riii, or Nikon D850. However - if you're a good photographer and understand how to use cameras and actual photography, rather than someone who's only interested in reading the specifications and buying the newest tech, I can guarantee that if you use an old P65+ you'll be very happy with the images it puts out, they have real depth.
The reasons I sold my Phase one kit were;
- It was insanely heavy, I'm very fit and strong - but my whole pack ended up weighing nearly 40-50lb (just camera gear) and it ends up being prohibitive - (I can't carry anything else, like tents or camping kit)
- The insurance cost almost the same as my car
- It was so expensive that I became terrified of it, a few times I almost knocked it over...
- The A7Riii is 85% as good and 1/4th the weight, I can fit my whole system into the bottom of a rucksack and go trekking with it
- Lenses cost between £3000-10000 so making changes to the system is very difficult....