Sony A7V, FX3 II and A7S IV - Latest Leak, Sensor Specs, 6K video

TNC Exclusive – We are all waiting for the Sony A7V camera announcement, and not only that, we are also eagerly waiting for the Sony A7S IV. These two cameras need to be updated as soon as possible by Sony. As of August 10, 2025, an anonymous source has dropped some exclusive information into our mailbox at TheNewCamera.com, shedding light on the upcoming Sony A7V, FX3 Mark II, and potentially the Sony A7S IV camera, related to all these models. The insider provided a kind of detailed information related to the sensor and the video capabilities, and we have decided to publish it since it does look legitimate to us.

At the very same time, while these sorts of unverified rumors are subject to change from time to time, they do offer valuable insights to those who love to track the latest information related to the Sony A7V rumors, latest specifications, or information related to the Sony A7S IV camera. Below is the analysis and the quotation of the email, and we have done a sort of professional analysis to the content of the email — so let’s jump into it.

Insider email leak – Direct quote from the source on Sony A7V and A7S IV camera development

Today, on August 10, 2025, we have received this detailed message from a source which is quite familiar with Sony’s prototyping process:

“The new Sony A7V might be using the same sensor as Z8/Z9 modified and slightly cheaper, since the exclusivity use for the sensor will expire before announcement.
44 MP stacked not the same as Panasonic 44 MP not stacked.
If they don’t go this route it might be completely new sensor. They have several prototypes at the moment. The 44 MP non stacked is faster than regular A7IV but slow in general. We will see.
FX3II / A7S IV is 24 MP as far as I know, comes with a fully stacked sensor and with 2-layer transistors. Same sensor will be used in FX6 II, triple ISO around 800 – 4000 – 25600, night specialist.
6K open gate 120 no crop, 4K open gate 120 fps oversampled from 6K open gate 120fps no crop.
That is all, release date this year or early next year if plans do not change. If they change, we will see.”

So this is intel highlighted that has been shared with us, so let’s break down the interesting set of information one by one.

Breaking down the Sony A7V rumor – sensor prototypes and performance upgrades

Let’s analyze the input according to the latest rumor. The Sony A7V camera has multiple prototypes, and this is quite common when we are talking about high-end or semi-professional cameras like the Sony A7V, before they finally enter a production line. The primary rumor centers on a modified 44-megapixel stacked sensor, which is almost the same as that used in the Nikon Z8 and Z9, but entirely adapted for the Sony ecosystem. The source has clearly mentioned that with Nikon’s exclusivity expiring soon, this could be a more cost-effective implementation, potentially putting the Sony A7V in direct competition with the existing Nikon Z8 — a kind of higher-resolution powerhouse for still photographers. The source has also said it has faster readout speeds to minimize rolling shutter in video, and it is a very clear indication the new 44MP sensor will break the Sony limitation barrier of continuous shooting abilities, as we have seen with the Sony A7IV camera, which is limited to 11 frames per second.

Alternatively, the source also mentions that a brand-new 44-megapixel non-stacked sensor exists, but it remains slow in general, suggesting it may help the Sony A7 series expand resolution-wise in stills and video but will keep the limits of continuous shooting speed or higher frame rates in video to protect higher-end model sales.

This set of information suggests that Sony is testing multiple prototypes of the Sony A7V camera with two different 44MP sensors. Yes, the AI chip is coming this year, which will further enhance the autofocus system of the A7 series cameras — possibly even better than the existing Canon offerings in their Canon R6 Mark II camera.

But, it’s interesting he doesn’t talk about 33 MP stacked CMOS sensor, which was rumored earlier

Sony FX3 Mark II / Sony A7S IV rumors decoded – stacked sensors, triple ISO, and cinema-grade video

Now the sensor description of the Sony FX3 Mark II and the Sony A7S IV camera is quite a bit more complex than what we have discussed earlier for the Sony A7V. According to the source, the Sony FX3 Mark II camera or the A7S IV will feature a 24-megapixel fully stacked sensor, and the sensor will incorporate dual-layer transistors — a step up in the efficiency of light gathering as well as data processing capability.

This sensor is also stated to be used in the upcoming Sony FX6 Mark II camera, creating a cohesive ecosystem for professional videographers starting from the Sony A7S IV.

The triple base ISO, which is said to start from 800, 4000, and 25600, means it can easily be tagged as a low-light king or night specialist camera, promising superior low-light performance and a good update from the existing Sony A7S III’s ultra-low-light-sensitive 12MP sensor. Specification-wise, the sensor is able to record 6K open gate at 120 frames per second without any significant crop. This allows professional videographers to capture highly detailed data without any lag or crop.

If this information is true, the upcoming Sony A7S IV, FX3 Mark II, and FX6 Mark II cameras will revolutionize filmmaking with their ultra-high-speed 24MP sensors and amazing low-light performance. The Sony FX3 series as well as the A7S series have always remained a popular choice among filmmakers, and if the above specs are true, they will continue to dominate.

Sony A7 V – Sony A7S IV Release Timeline 

The source mentions the release of the Sony cameras in late 2025 and early 2026 if they remain on schedule, if their plans remain unchanged. This suggested date aligns with Sony’s refresh cycle, which generally occurs in the fourth quarter of the year.

However, as we have discussed, a lot of camera specifications depend on beta testers’ reports — what they like and what they don’t like — so everything gets fine-tuned in the final production line version of the camera.

Sony A7V versus Sony FX3 Mark II / Sony A7S IV versus competitors – a quick specification comparison table based on the rumored information we have

To visualize the rumored advancements, here’s a professional comparison table pitting the leaks against benchmarks like the Nikon Z8:

Final thoughts about Sony A7V and Sony A7S IV/FX3II rumors

We have decided to put the insider information directly in our post without altering it, to make everything as transparent as possible for you. At the same time, we have also added our analysis on what we think about this set of information. Stay tuned to TheNewCamera.com for more information related to upcoming cameras and lenses.

Hope you enjoyed reading this article, At TheNewCamera.com, we’re dedicated to keeping you informed about the latest camera news. The article “Kodak FZ45, FHD 44MP and Kodak FZ55 – Amazon UK Best Selling Compacts of 2025” was published on11:54 am, Sunday, 10 August 2025, Greenwich Mean Time (GMT) by thenewcamera.com team  | Follow us on our social pages  FACEBOOK | TWITTER | INSTAGRAM to get live  Camera News + see more Sony Alpha Rumor

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