Big rant coming up. Let’s go back 6 years? When Canon released the 5Dmk3 with CF/SD card slots, great, but when we know that the SD card slots is throttled by the slower write speed we all wondered who made this stupid decision. Surely one of the most important reason to have a dual card slots is back up. You can use it for expanded memory but let’s be honest here, this camera is a top end, professional grade camera and those who relies on it will use it for back up. And before you say “why don’t you write Jpegs?” I have personally tested it, the buffer will fill up faster and actually you get LESS shots if you shoot RAW/JPEG instead of dual RAW. The other thing is….true back up is having 2 of the same files, so Jpeg is not a true back up. Having no other option really, with heavily invested in Canon glass, I bought one and suck it up. Now…..rant on 5D3 over, they did the same again with the 5D4…..same again. WTF. Again, having even more Canon glass now, bought it again. Sony do it too now on the A9, A7Riii, and now the A7iii. WHY ?!!?!?! This cannot to do with cost, it can’t, they managed to add in 5 axis IBIS, increased all the tech and keep the prices about the same, don’t tell me you can’t afford to put in 2 UHS-II slots, wack on another £100, I’d pay it, wait 6 months until the price go down then release it….wait, D850 is a year old….how long do you need to wait? This problem has been around for over half a decade, what the hell. Nikon can do it for their D850. It’s not a technical limitation. What is it? I can imagine now at this point someone will say “the buffer is large enough, you don’t need to machine gun it.” If you take that stance then why not make a camera that takes 1FPS? There are many situations where you need that speed and buffer, just because you don’t need it, doesn’t mean other people don’t. i.e. confetti shot walking couple towards you. The walk is about 20 seconds, you get 1 chance, they are not throwing it again. You are walking backwards, you are composing and shooting, you can’t judge guess when out of the hundreds and thousands of confetti/rice/pedals will land and whether you might capture the expression….there is always that pedal that land right in front of their eye blocking it. You need that FPS and buffer and write speed. So…they can do it, the tech is there. Is it about money,l? it’s £3,000! Is it to drive people further up the models? Really? It’s a £3,000 camera, the A7Riii is arguably the flagship for their high res body, there is no higher up the range if you want that resolution. It is clear someone somewhere made a decision to gimp the camera because they can. I can’t honestly imagine an engineer speccing and designing and says….”let’s make one of these slot slower because that is what people want.” If you are going to do that, might as well put both to be slow UHS-I. This isn’t a “choice” so if you want to shoot in a faster slot or slower slot you can. I can’t imagine why you want to shoot in the UHS-I slots. At this point someone will probably say “I only shoot 1 slot and use the other as more storage”……well, having 2 x UHS-II slots is hardly going to hurt you then is it? so……………….argument = moot. This has got to stop Sony/Canon. This is ridiculous.