Archive 2024 · Speculation on stacked BSI sensor at $4K - based on competition from Nik...
Steve Spencer Offline Upload & Sell: Off
p.5 #1 · Speculation on stacked BSI sensor at $4K - based on competition from Nikon/Canon
jhapeman wrote:
Except there is ZERO proof of your claim on the AF, and not even Nikon claims that, so no, I'm not "missing that." Also literally just said the faster readout has some benefits, like EVF refresh rate. Are you reading what I wrote?
Yeah, I am but the advantages to the EVF are not just refresh rate it is more than that. The EVF has more data to work with, so it has a lot less frame insertion, it has a lot less loss of resolution, and is noticeably better. I read what you wrote, but I am also noting what you are missing.
And as for the proof of the claim on AF look at the calculations per second. Do you think that increasing those does no good at all? Or does it help with tracking over time? There is proof that increasing the sensor scan speed increases the calculations per second and all I am claiming from my experience using the A9 vs. the A7r V is that the increased calculations per second really improves tracking over time. Not a big leap in logic there, but you are missing it.
p.5 #2 · Speculation on stacked BSI sensor at $4K - based on competition from Nikon/Canon
Steve Spencer wrote:
Guy, sensor scan speed doesn't help focus acquisition much but it does dramatically improve AF if you are tracking over time. It is just a lot easier for the AF to keep up with the target if it can do a lot more calculations per second and sensor scan speed allows that.
Except these cameras do NOT read out the entire sensor--it only needs to read out the PDAF points and that's a relatively tiny number compared to the total sensor. How fast those can be read is a totally different thing than the speed of reading out the entire sensor. Again, you insist on that readout speed helping the AF, but that's just a leap you are making. As Guy points out the tracking on the A7RV is superb, and it's very slow in sensor readout.
Accuracy in tracking has more to do with how fast the camera can read just the AF pixels and then run the calculations on them, and then the predictive algorithms used to tell the lens where to focus next. That's why Nikon focuses on the fact that the Z6III has the Expeed 7 found in the Z8/Z9/Zf here--it's what's giving the AF improvements.
Jun 20, 2024 at 01:08 PM
Steve Spencer Offline Upload & Sell: Off
p.5 #3 · Speculation on stacked BSI sensor at $4K - based on competition from Nikon/Canon
jhapeman wrote:
Except these cameras do NOT read out the entire sensor--it only needs to read out the PDAF points and that's a relatively tiny number compared to the total sensor. How fast those can be read is a totally different thing than the speed of reading out the entire sensor. Again, you insist on that readout speed helping the AF, but that's just a leap you are making. As Guy points out the tracking on the A7RV is superb, and it's very slow in sensor readout.
Accuracy in tracking has more to do with how fast the camera can read just the AF pixels and then run the calculations on them, and then the predictive algorithms used to tell the lens where to focus next. That's why Nikon focuses on the fact that the Z6III has the Expeed 7 found in the Z8/Z9/Zf here--it's what's giving the AF improvements. ...Show more →
Again, you missed what I said. I said that the sensor scan speed affects the calculations per second for AF. Yes, the PDAF points are what are primarily read for AF, but a faster sensor scan speed also means greater calculations per second and those larger number of calculations per second for AF improves tracking AF and I have a Sony A9 and a Sony A7r V. The A7r V is fantastic for AF acquisition especially with its new AI module, but it doesn't track fast moving objects nearly as well as the A9 (which at this point isn't nearly as good at AF acquisition). Not surprisingly the A9 has much higher calculations per second for the AF. So, yes you are missing that when you are trying to track fast moving objects that the more calculations per second that faster sensor scan speed provides also improves tracking AF especially as you follow a target over time and it is easy to see this advantage if you have an A9 and an A7r V as I do.
p.5 #4 · Speculation on stacked BSI sensor at $4K - based on competition from Nikon/Canon
Steve Spencer wrote:
Yeah, I am but the advantages to the EVF are not just refresh rate it is more than that. The EVF has more data to work with, so it has a lot less frame insertion, it has a lot less loss of resolution, and is noticeably better. I read what you wrote, but I am also noting what you are missing.
And as for the proof of the claim on AF look at the calculations per second. Do you think that increasing those does no good at all? Or does it help with tracking over time? There is proof that increasing the sensor scan speed increases the calculations per second and all I am claiming from my experience using the A9 vs. the A7r V is that the increased calculations per second really improves tracking over time. Not a big leap in logic there, but you are missing it....Show more →
You are assuming a direct link between the AF calculations and read out speed when that's not required. The real issue is how fast it's reading out the PDAF pixels. I don't doubt that all of the manufacturers could do higher AF calculations per second on their lower-end cameras but they just choose not to and reserve that for the higher-end cameras where they also typically put their fastest and most powerful processors.
The Sony A7IV only has 759 PDAF points and I'm sure those can be read out at a ridiculously high rate. With the same Bionz XR processor used in the A1 I also dont' doubt they *could* increase the AF calculations per second to whatever they chose. I can't find an exact spec for the A7IV online but the consensus seems to be it has the same 120 calculations per second as the A1.
Jun 20, 2024 at 01:17 PM
Steve Spencer Offline Upload & Sell: Off
p.5 #5 · Speculation on stacked BSI sensor at $4K - based on competition from Nikon/Canon
jhapeman wrote:
You are assuming a direct link between the AF calculations and read out speed when that's not required. The real issue is how fast it's reading out the PDAF pixels. I don't doubt that all of the manufacturers could do higher AF calculations per second on their lower-end cameras but they just choose not to and reserve that for the higher-end cameras where they also typically put their fastest and most powerful processors.
The Sony A7IV only has 759 PDAF points and I'm sure those can be read out at a ridiculously high rate. With the same Bionz XR processor used in the A1 I also dont' doubt they *could* increase the AF calculations per second to whatever they chose. I can't find an exact spec for the A7IV online but the consensus seems to be it has the same 120 calculations per second as the A1. ...Show more →
Consensus without any source, that to me sounds like a rumor or fake news if you prefer.
p.5 #6 · Speculation on stacked BSI sensor at $4K - based on competition from Nikon/Canon
Steve Spencer wrote:
Again, you missed what I said. I said that the sensor scan speed affects the calculations per second for AF. Yes, the PDAF points are what are primarily read for AF, but a faster sensor scan speed also means greater calculations per second and those larger number of calculations per second for AF improves tracking AF and I have a Sony A9 and a Sony A7r V. The A7r V is fantastic for AF acquisition especially with its new AI module, but it doesn't track fast moving objects nearly as well as the A9 (which at this point isn't nearly as good at AF acquisition). Not surprisingly the A9 has much higher calculations per second for the AF. So, yes you are missing that when you are trying to track fast moving objects that the more calculations per second that faster sensor scan speed provides also improves tracking AF especially as you follow a target over time and it is easy to see this advantage if you have an A9 and an A7r V as I do....Show more →
Sigh. You don't get it. I have now or have had the A9, A9II, A9III, A1, A7RIII, A7RV, A7IV and A7IIIS.
The scan/readout speed for the entire sensor is totally different than the scan/readout for the PDAF system. Period.
Jun 20, 2024 at 01:20 PM
Steve Spencer Offline Upload & Sell: Off
p.5 #7 · Speculation on stacked BSI sensor at $4K - based on competition from Nikon/Canon
jhapeman wrote:
Sigh. You don't get it. I have now or have had the A9, A9II, A9III, A1, A7RIII, A7RV, A7IV and A7IIIS.
The scan/readout speed for the entire sensor is totally different than the scan/readout for the PDAF system. Period.
Nobody said otherwise. You don't get it, however, that if you look at those cameras for all the data we have the sensor scan speed is correlated with the AF calculations per second. The higher the sensor scan speed the higher the AF calculations per second. If you can produce data that shows a different pattern I am happy to be proven wrong, but rumors and fake news don't count as data.
Edit: and let me add that the PDAF sensors are on the sensor, so how if you are scanning the sensor more slowly it seems to me you have to be scanning the PDAF sensors more slowly and scanning the PDAF sensors more slowly seems to me must reduce the number of calculations that are possible per second. So, it isn't just the observation that sensor scan speed is correlated with calculation per second, there is also a logical causal story that scanning the sensor more slowly results in scanning the PDAF sensors more slowly which results in fewer calculations per second.
p.5 #8 · Speculation on stacked BSI sensor at $4K - based on competition from Nikon/Canon
Steve Spencer wrote:
Nobody said otherwise. You don't get it, however, that if you look at those cameras for all the data we have the sensor scan speed is correlated with the AF calculations per second. The higher the sensor scan speed the higher the AF calculations per second. If you can produce data that shows a different pattern I am happy to be proven wrong, but rumors and fake news don't count as data.
Right, like your claim that the new sensor is why Nikon is saying better AF on the Z6III, even though Nikon themselves doesn't make this claim? Or your comment that it has a blackout-free EVF when it in fact does not?
There is no doubt some connection between the readout and the AF calculations but we just don't have enough data to say what that is and how much it would really benefit vs. the speed of the processor and everything else in the pipeline. The fact that vendors reserve the highest published AF calculations per second to their flagship cameras isn't surprising, since they charge a hefty premium for those cameras.
I can tell you this from practical experience: The tracking performance of the A7RV is shockingly good. The only reason I didn't keep it is that once I have used true blackout-free shooting with the A9's and A1's it was just impossible to go back. But back when the A7RV was released I was getting a higher critically in focus keeper rate on some of my BIF sequences with that camera vs. the A1s.
The bottom line is you are making a link/claim for this camera that not even Nikon makes. That to me is telling--if they wanted to boost their new sensor even more they would call it out for the improved AF. Instead in their marketing they don't mention that at all, and simply talk about how it has the improved algorithms and Expeed 7. That's a pretty strong indication those are the real reasons for the improved AF of the Z6III.
Jun 20, 2024 at 01:39 PM
Steve Spencer Offline Upload & Sell: Off
p.5 #9 · Speculation on stacked BSI sensor at $4K - based on competition from Nikon/Canon
jhapeman wrote:
Right, like your claim that the new sensor is why Nikon is saying better AF on the Z6III, even though Nikon themselves doesn't make this claim? Or your comment that it has a blackout-free EVF when it in fact does not?
There is no doubt some connection between the readout and the AF calculations but we just don't have enough data to say what that is and how much it would really benefit vs. the speed of the processor and everything else in the pipeline. The fact that vendors reserve the highest published AF calculations per second to their flagship cameras isn't surprising, since they charge a hefty premium for those cameras.
I can tell you this from practical experience: The tracking performance of the A7RV is shockingly good. The only reason I didn't keep it is that once I have used true blackout-free shooting with the A9's and A1's it was just impossible to go back. But back when the A7RV was released I was getting a higher critically in focus keeper rate on some of my BIF sequences with that camera vs. the A1s.
The bottom line is you are making a link/claim for this camera that not even Nikon makes. That to me is telling--if they wanted to boost their new sensor even more they would call it out for the improved AF. Instead in their marketing they don't mention that at all, and simply talk about how it has the improved algorithms and Expeed 7. That's a pretty strong indication those are the real reasons for the improved AF of the Z6III.
I never made any claim at all about what Nikon said. You now are not only missing things you are mischaracterizing what I have said and saying I have made claims I have not made.
Let's agree to disagree about the tracking AF performance of the A7r V. I have it and although it isn't terrible I wouldn't call it shocking good at all, and I find over time as you track fast moving objects that my A9 is better, YMMV and apparently does.
When you compared that A1 vs. the A7rV were you shooting the A7rV at 10 fps and the A1 at 30 fps? Are you saying you actually got over three times more critically in focus shots with the A7rV (you would have been taking only a third of the pictures with the A7rV). I am deeply skeptical of such a claim. Perhaps in a second you would get let's say 22 critically in focus shots with the A1 and 8 or 9 with the A7r V, but that is still dramatically better performance with the A1. It isn't the percentage of keepers it is the total number of keepers that tests how well the AF is doing. Sure slowing down the AF gets a higher percentage of keepers, but that is also drastically lessening the demands on the AF system. If I shoot my A7r V at 3 fps it can get almost every shot in focus when tracking, but I don't call that amazing AF performance.
p.5 #10 · Speculation on stacked BSI sensor at $4K - based on competition from Nikon/Canon
Steve Spencer wrote:
I never made any claim at all about what Nikon said. You now are not only missing things you are mischaracterizing what I have said and saying I have made claims I have not made.
Let's agree to disagree about the tracking AF performance of the A7r V. I have it and although it isn't terrible I wouldn't call it shocking good at all, and I find over time as you track fast moving objects that my A9 is better, YMMV and apparently does.
When you compared that A1 vs. the A7rV were you shooting the A7rV at 10 fps and the A1 at 30 fps? Are you saying you actually got over three times more critically in focus shots with the A7rV (you would have been taking only a third of the pictures with the A7rV). I am deeply skeptical of such a claim. Perhaps in a second you would get let's say 22 critically in focus shots with the A1 and 8 or 9 with the A7r V, but that is still dramatically better performance with the A1. It isn't the percentage of keepers it is the total number of keepers that tests how well the AF is doing. Sure slowing down the AF gets a higher percentage of keepers, but that is also drastically lessening the demands on the AF system. If I shoot my A7r V at 3 fps it can get almost every shot in focus when tracking, but I don't call that amazing AF performance....Show more →
I am talking at the top AF rate on the A7RV. It's very, very good if you know how to set it up and use it. The AI AF is a big reason for that. Obviously it cant' shoot at the higher frame rates of the A1, but that's not relevant. At what it's designed for, it does a killer job.
Now, the A9III demolishes it and I have no doubt the A1II will as well. But again, how much of that is due to the higher readout is unknown. All we can say with certainty is the higher readout enables a higher fps continuous shooting speed. There's no empirical evidence that it would improve the AF accuracy at whatever frame rate the camera itself is limited to. We can presume it helps and it no doubt does to some small extent, but it's all just speculation.
The real boost on any updated camera Sony puts out right now is going to come from the AI AF system. It's just very good at what it does *if* you know how to configure it. I've seen people struggle with the A9III because they didn't understand how to delve into the menu settings and configure them for optimal performance.
One thing I think Sony misses out on in their quest for the "infinitely configurable" on their cameras is making some super simple "dumb" settings like the basic "animal" recognition you see on the Canon's and Nikons.
Jun 20, 2024 at 01:58 PM
Steve Spencer Offline Upload & Sell: Off
p.5 #11 · Speculation on stacked BSI sensor at $4K - based on competition from Nikon/Canon
jhapeman wrote:
I am talking at the top AF rate on the A7RV. It's very, very good if you know how to set it up and use it. The AI AF is a big reason for that. Obviously it cant' shoot at the higher frame rates of the A1, but that's not relevant. At what it's designed for, it does a killer job.
Now, the A9III demolishes it and I have no doubt the A1II will as well. But again, how much of that is due to the higher readout is unknown. All we can say with certainty is the higher readout enables a higher fps continuous shooting speed. There's no empirical evidence that it would improve the AF accuracy at whatever frame rate the camera itself is limited to. We can presume it helps and it no doubt does to some small extent, but it's all just speculation.
The real boost on any updated camera Sony puts out right now is going to come from the AI AF system. It's just very good at what it does *if* you know how to configure it. I've seen people struggle with the A9III because they didn't understand how to delve into the menu settings and configure them for optimal performance.
One thing I think Sony misses out on in their quest for the "infinitely configurable" on their cameras is making some super simple "dumb" settings like the basic "animal" recognition you see on the Canon's and Nikons. ...Show more →
Let's agree to disagree. I don't want to go around and around. You are making the same points over and over and aren't responding to my arguments.
p.5 #12 · Speculation on stacked BSI sensor at $4K - based on competition from Nikon/Canon
jhapeman wrote:
Right, like your claim that the new sensor is why Nikon is saying better AF on the Z6III, even though Nikon themselves doesn't make this claim?
Yes they do:
"The combination of the partially-stacked CMOS sensor and the EXPEED 7 high-speed image-processing engine, found in the flagship model, achieves shorter AF calculation cycles."
@Steve Spencer is spot on.
My A7RV was fantastic for moderately moving subjects, but for tracking fast action it was frustrating.
Compared to the A9/A1 it just isn't capable of tracking a subject nearly as good, because of the higher number of AF calculations per second of the stacked sensors.
I tested this myself multiple times, side by side. The difference wasn't even subtle.
Regarding the AI AF: it's only for subject recognition (which is truly fantastic on the A7RV!) and has nothing to do with the actual ability to track a fast subject.
p.5 #13 · Speculation on stacked BSI sensor at $4K - based on competition from Nikon/Canon
jhapeman wrote:
Semi-stacked means nothing really at this point except it has faster readout. The rest, OK fine buy you're comparing a camera that's three years old and due for a replacement, so my point was "stepping up their game" is a bit of a silly statement since they are literally just barely exceeding the specs on an old Sony that's going to be replaced.
Your megapixel statement is nonsense. You know they have always mattered, and for two cameras in same class and price bracket it's an important comparison. The A9III is a 120fps global shutter camera; comparing that to the A7V and Z6III is just silly.
You are literally comparing apples and oranges at this point....Show more →
My comment is mine. It is not silly. Seems to be a thing lately where I can't say what I'm feel.
Semi stacked or not. It is something. Does it work? According to Steve Perry's review of a pre production model it does. To a certain extent. Not like true stacked sensors. Marketing ploy? Time will tell. And that was my point with my first comment. Maybe Sony will offer a semi stacked sensor in a A7V. But that's speculation at best.
No! my megapixel comment was not nonsense. I did say, in response to someone else "all of a sudden mp's are a concern". I didn't say it. And it was in regard to the A9III and many knocking the 24mp sensor. And speaking of the A9III. I don't remember mentioning the A9III in my comments except possibly in regards to the 24mp sensor in the Z6III. And I for sure was not comparing the A9III, A1, Z8 and Z9 to the A7IV or Z6III.
p.5 #15 · Speculation on stacked BSI sensor at $4K - based on competition from Nikon/Canon
Thanks everyone for another interesting thread. I’m also a A7RV + A9 owner, and I haven’t shot the same subjects, or even tried tracking a fast moving object much with my A7RV, so I can’t weigh in on tracking birds or fit young adults, yet in comparison.
But the original topic of this thread is about 4K stacked sensor cameras. Sony is the market leader for interchangeable lens mirrorless and one of the really weird things in this market is the lock in a Sony gets once a customer has bought into e-mount. Even though Nikon is a reasonably compelling alternative to Sony in the wildlife and birding market, they simply won’t get many switchers due to the cost of switching out the GM glass to the Nikon Z telephotos. Not many will switch and the bodies won’t be driving it.
We can gnash our teeth and jump up and down from the sidelines, but the vast majority of us are not going to be switching systems due to the amount of money we have sunk into e-mount glass. I only give half a shit about what Canon or Nikon is doing with their systems because they’re only playing catch (mostly). Like many of you, I’ll be on that A1ii preorder list when it happens. Sony knows that as the market leader with a very sticky commodity - e-mount and its associated glass - so they will not throw us a bone by pricing the A1ii at $6K or less. I’ll be happy to fork out full retail up to $7500 on day 1 like the rest of you all. It will be cheaper than switching systems, for sure.
And I suspect that while this crowd heavily skews towards shooting longer telephotos and wildlife, if you are mainly shooting portraits, events, landscapes and/or field sports like myself, then you’d be a moron to switch systems, and there is no way a $4K stacked body from the competition is going to make you sell all your glass at >$4K loss. Personally, I’d like see a lot more competitive heat from Nikon and Canon in the form of a wider variety of wide to regular focal length glass plus better bodies. As others have said, until Sony really feels the heat, expect to pay market leader pricing for the foreseeable future. Any other posturing about “this new [Canon or Nikon] camera is the greatest / best value” is full on BS until Sony bean counters sit up and take notice due to falling market share.
Final word, since I’ve gone on too far about this - Sony is bringing new ”lifers” into the fold with their excellent vlogging cameras in FF and APS-C. Until Nikon and Canon jump onto this bandwagon of folks who shoot way more video than stills, their mounts are going to continue to lose market share full stop.
p.5 #16 · Speculation on stacked BSI sensor at $4K - based on competition from Nikon/Canon
If Sony were to come out with a A7RV with a high speed stacked sensor and tweak their EVF for no loss of rez when shooting I would have it on an overnight delivery order. That would be a pretty ultimate camera. But I suspect that's not on Sony's agenda (sadly). But man, it would be one heck of an offering. One that for certain would be a stick up Canon and Nikon's butts. Too bad their marketing department doesn't hire me.
p.5 #17 · Speculation on stacked BSI sensor at $4K - based on competition from Nikon/Canon
That is probably true about the “content creator”cameras. But it would close the door on an open market to sell native e mount mid fast super telephoto lenses. 500 5.6, 600 6.3, 700 6.3. Reasonable people can argue about if there is a dedicated camera now or one in the pipeline to that cause. To my mind the A1 successor will be that camera.
p.5 #18 · Speculation on stacked BSI sensor at $4K - based on competition from Nikon/Canon
Newenglandrocks wrote:
Thanks everyone for another interesting thread. I’m also a A7RV + A9 owner, and I haven’t shot the same subjects, or even tried tracking a fast moving object much with my A7RV, so I can’t weigh in on tracking birds or fit young adults, yet in comparison.
But the original topic of this thread is about 4K stacked sensor cameras. Sony is the market leader for interchangeable lens mirrorless and one of the really weird things in this market is the lock in a Sony gets once a customer has bought into e-mount. Even though Nikon is a reasonably compelling alternative to Sony in the wildlife and birding market, they simply won’t get many switchers due to the cost of switching out the GM glass to the Nikon Z telephotos. Not many will switch and the bodies won’t be driving it.
We can gnash our teeth and jump up and down from the sidelines, but the vast majority of us are not going to be switching systems due to the amount of money we have sunk into e-mount glass. I only give half a shit about what Canon or Nikon is doing with their systems because they’re only playing catch (mostly). Like many of you, I’ll be on that A1ii preorder list when it happens. Sony knows that as the market leader with a very sticky commodity - e-mount and its associated glass - so they will not throw us a bone by pricing the A1ii at $6K or less. I’ll be happy to fork out full retail up to $7500 on day 1 like the rest of you all. It will be cheaper than switching systems, for sure.
And I suspect that while this crowd heavily skews towards shooting longer telephotos and wildlife, if you are mainly shooting portraits, events, landscapes and/or field sports like myself, then you’d be a moron to switch systems, and there is no way a $4K stacked body from the competition is going to make you sell all your glass at >$4K loss. Personally, I’d like see a lot more competitive heat from Nikon and Canon in the form of a wider variety of wide to regular focal length glass plus better bodies. As others have said, until Sony really feels the heat, expect to pay market leader pricing for the foreseeable future. Any other posturing about “this new [Canon or Nikon] camera is the greatest / best value” is full on BS until Sony bean counters sit up and take notice due to falling market share.
Final word, since I’ve gone on too far about this - Sony is bringing new ”lifers” into the fold with their excellent vlogging cameras in FF and APS-C. Until Nikon and Canon jump onto this bandwagon of folks who shoot way more video than stills, their mounts are going to continue to lose market share full stop....Show more →
I came here to write something similar but you did it much better than I did. The only thing close right now is Canon's announced R5II, but it still falls short in many ways. The price on that isn't a huge enticement as you point out when you factor in all of costs/investments in glass. All of the hot air re: the Z6III seems to have dried up very rapidly now that it's in users hands. There's no miracles from the "partially stacked" sensor, and there are trade-offs in dynamic range.
If you want real stacked sensor shooting, you are going to have to get an A9II or A9III or A1 from Sony or an R1, R3 or R5II from Canon and a Z8 or Z9 from Nikon. Sony will soon push this further with an updated A1. I suspect they will do what they have always done and keep the old models around at the lower price points to compete with the offerings from others.
To be honest, the R1 release was a big disappointment as Sony needs Canon to push them if they are going to really push things. I am more inclined now to believe that Sony will just push out an updated A1 with the new body, AI Focus system, and minor upgrades elsewhere to things like the EVF and maybe supporting USB 4 and/or PCIe 4 CFe cards. Just those upgrades will move it ahead of the competition again although it won't give them the 3+ year headstart they had at the A1 release, so maybe they have something up their sleeves like they did with the A9III--but my guess is any major advancement will be in the A1 III.
Meanwhile I'm just waiting for an announcement later this year!
p.5 #19 · Speculation on stacked BSI sensor at $4K - based on competition from Nikon/Canon
I think the R5II should put some pressure on Sony to give us a 4K, stacked sensor but unfortunately it won't. It's too late in the cycle now and I'm sure the A1II is just about completed. So, we'll have to wait for a little while for maybe the A7V or a the A7RVI for them to give us that. We are going to have to make do with the A9's and the A1 in the meantime unfortunately.
I would also like to think that all these new cameras from the Canon and Nikon doing 15+fps would put pressure on Sony to up the fps on their lower bodies, and some of their higher ones, but you see how they haven't changed that a bit since what...The A7RII? how many years is that?
Sony does what they want at their own pace it seems. Fortunately, for the most part they have been trying to push the envelope.
p.5 #20 · Speculation on stacked BSI sensor at $4K - based on competition from Nikon/Canon
dcisive wrote:
If Sony were to come out with a A7RV with a high speed stacked sensor and tweak their EVF for no loss of rez when shooting I would have it on an overnight delivery order. That would be a pretty ultimate camera. But I suspect that's not on Sony's agenda (sadly). But man, it would be one heck of an offering. One that for certain would be a stick up Canon and Nikon's butts. Too bad their marketing department doesn't hire me.
What price do you think that would come at? Surely it would be at least $1000 - $2000 more than today’s A7R5. Why not just pick up a used A1 for $4,000?