Summary
- Unconfirmed information assigns Sony a new 26 MP fully stacked APS-C sensor
- The sensor is said to read its full resolution at up to 124 frames per second
- Claims include 3.76 μm pixels, 6K120 and 4K120 capability, and dual-gain or DCG HDR modes
- Its speed could reduce rolling shutter and blackout in future cameras
- The A6900 and FX30 II names are speculation, not confirmed products
Sony is reportedly developing a 26 MP fully stacked APS-C sensor with full readout at up to 124 fps and 6K120 or 4K120 capability, although no camera using it has been confirmed.
The information originated with Sony Alpha Rumors and was repeated by technology publications. It assigns the sensor a 3.76 μm pixel pitch, fully stacked architecture and dual-gain or DCG HDR modes, with the greatest attention focused on full 26 MP readout at 124 frames per second.
If those numbers reach a shipping product, the change would mean more than a higher burst rate. Fast readout can reduce rolling shutter, enable blackout-free tracking and support high frame rates without the heavy crop or line skipping found with slower sensors.
What fully stacked APS-C means
In a stacked sensor, photosensitive pixels and readout logic sit on different layers of the chip. The design allows more and faster circuitry without occupying the same area as each photodiode, improving speed first rather than automatically improving noise or dynamic range.
The leak uses “fully stacked” to distinguish a complete high-speed architecture from more limited arrangements. No official Sony Semiconductor data sheet currently confirms its layout, power consumption or thermal requirements.
124 fps full readout and still photography
Full 26 MP readout at 124 fps describes maximum sensor throughput, not necessarily 124 RAW frames per second in a camera. Processor, buffer, storage, autofocus and temperature may impose a lower real burst rate.
Even at a lower burst rate, a fast scan is useful for an electronic shutter because it reduces distortion in moving subjects and banding under artificial light. In sport and wildlife it could also benefit viewfinder continuity and continuous autofocus calculations.
6K120 and 4K120: a sensor ceiling is not a final camera spec
The rumour mentions 6K120 and 4K120 but does not specify 16:9, open gate, crop or full-sensor area, nor bit depth and chroma subsampling. A chip’s ability to output such a stream does not mean a camera will record it internally at the same quality.
6K at 120 fps requires an exceptionally fast processor, high data throughput and effective heat dissipation. A cinema implementation may prioritise recording duration and connectivity, while a stills body may choose lower limits for size and power consumption.
A6900 and FX30 II are not confirmed cameras
The A6900 and FX30 II names have been connected to the sensor by the rumour community, but Sony has announced neither model. It is unknown whether the sensor is intended for a consumer camera, an industrial application, a different product name or several products.
The current α6700 is the clearest reference point for Sony’s stills-oriented APS-C line; PTTL covered its official launch and capabilities. Any comparison with a future body must wait for confirmed readout, autofocus, stabilisation and video specifications.
Availability and price
There is no official product launch, price or availability for this specific sensor or for a camera using it. The official Sony Semiconductor image-sensor page is the primary source that could confirm a public data sheet.
Because there is no confirmed price in any currency, no reliable euro conversion can be made. Prices of current APS-C cameras are not evidence for a product that does not yet exist.
What we think
The most interesting claim is 124 full readouts per second because it could improve stills, autofocus and video at once. But it is a sensor capability, not a promise from a finished camera. Without an official data sheet and a body able to manage the data and heat, 6K120 and the A6900 or FX30 II names remain scenarios.
Frequently asked questions
Has Sony announced the sensor?
No. The details come from an unconfirmed leak and there is no public official data sheet.
Does 124 fps mean a 124 RAW fps burst?
Not necessarily. It is the rumoured full-readout rate of the chip; body, processor and buffer determine the real burst rate.
Are 6K120 and 4K120 confirmed in a camera?
No. They are described as sensor capabilities without format, codec, crop or recording-duration details.
Do the A6900 and FX30 II exist?
The names circulate as speculation, but Sony has not announced those cameras.
