. The Sony A7iv has the same EVF as the Sony A7riii, which was always a very comfortable EVF for me.
The R3 and R4 do not share the same EVF. The R4 has 5.76m-Dot Tru-Finder OLED EVF. The R3 has a 3.69m-Dot Tru-Finder OLED EVF, while the new 4 Base has a 3.68m-Dot EVF.
Read -- I did not say that the the R4 and R3 have the same EVF. I said the A7iv and A7r3 have the same EVF -- I have compared them side by side, there is absolutely no perceptible difference.
But for others, maybe the fully articulating LCD and true touch screen really enhance the joy and comfort of the shooting experience.
Very subjective ... it's a "deal breaker" for perhaps as many photographers as those who would find it a "joy" or "comfort".
YES! Very subjective! Including, just how valuable is an EVF of 5.76m Dots vs 3.69M dots. For me, once you get to 3.69m dots and higher, it's almost impossible to tell the difference. I've used the 5.76m A7r4. If everything else about the cameras was equal, I would take the higher resolution EVF. But it really is a pretty minor factor in my experience. And not all else is equal.
But for a vast number of shooters, those advantages are extremely minor and outweighed by the advantages of the A7iv.
That's a rather bold and unsubstantiated assumption I think. To those who want\need the features of the 4R, I'm sure those are not "extremely mild" to them. The numbers may be "less vast" than you imagine.
I'm not talking about the 61mp resolution -- That will have a fair number of subscribers. Are you saying that people would throw their cameras in the garbage without a 5.76m EVF? What did those R4 owners do before the R4 existed?!?!?!
So no, don't pretend anybody "needs" a 5.76m dot EVF. It's a nice feature. Nobody needs it. And the A7iv has tons of nice features that the A7rIV lacks. If the R4 had a 24mp sensor, do you think it would still have lots of buyers just to get the 5.76m EVF? (And I'd say that not many people are going to buy the A7iv just for a customizable exposure comp dial though it's a feature I really like).
As to which features matter the most, that's a subjective question. But I don't see hordes of people getting a camera SOLELY for a higher resolution EVF.
The 4RA and 3RA have a higher resolution LCD than the 4 Base. And the 4R has a number of other features not found in the 4 Base.
Thing is, it's a rather small number of features. The only "positive" features that the 4R has, IMO, are the higher resolution EVF and LCD. Now, this is my subjective opinion -- not trying to start a fight -- But for me, the R4 sensor is a negative. I have written extensively on it, I hate it. But that is a subjective issue -- I know there are plenty of people who love it.
So objectively -- The only positive features in the 4R are the higher resolution EVF, higher resolution LCD, and pixel shift technology. That's it -- those 3. Then 1 big subjective difference -- the sensor, which is a positive for some people, and a negative for other people.
For me, the A7iv -- Subjectively, it has a better sensor than the R4. Now objectively -- It has a true touch screen, it has lossless compression, CF Express support, the newest AF system, the newest menu system, 60p 4K support, articulating LCD, customizable exposure compensation dial, more advanced networking including the new Visual Story app, and a slew of other features.
That said, the 4 Base if better "jack of all trades", and Sony made the 4 Base more video capable, and blessed it with a better AF than even the 4R.
Yes, which is why the A7iv is better for many people. The R4 is great for those who want the ultra high resolution.